1274144256 has 720 divisors, whose sum is σ = 5094048960. Its totient is φ = 313528320.

The previous prime is 1274144243. The next prime is 1274144257. The reversal of 1274144256 is 6524414721.

1274144256 is a `hidden beast` number, since 127 + 41 + 442 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (53760) is a multiple of the sum of its prime divisors (42).

It is a self number, because there is not a number n which added to its sum of digits gives 1274144256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1274144257) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 67060215 + ... + 67060233.

It is an arithmetic number, because the mean of its divisors is an integer number (7075068).

Almost surely, 2^1274144256 is an apocalyptic number.

1274144256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1274144256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2547024480).

1274144256 is an abundant number, since it is smaller than the sum of its proper divisors (3819904704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1274144256 is an equidigital number, since it uses as much as digits as its factorization.

1274144256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 42 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 1274144256 is about 35695.1573186056. The cubic root of 1274144256 is about 1084.1087929734.

Adding to 1274144256 its reverse (6524414721), we get a palindrome (7798558977).

It can be divided in two parts, 1274 and 144256, that added together give a triangular number (145530 = T₅₃₉).

The spelling of 1274144256 in words is "one billion, two hundred seventy-four million, one hundred forty-four thousand, two hundred fifty-six".