1274397144 has 32 divisors (see below), whose sum is σ = 3186915840. Its totient is φ = 424676000.

The previous prime is 1274397143. The next prime is 1274397161. The reversal of 1274397144 is 4417934721.

It is a junction number, because it is equal to n+sod(n) for n = 1274397096 and 1274397105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1274397143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120469 + ... + 130619.

It is an arithmetic number, because the mean of its divisors is an integer number (99591120).

Almost surely, 2^1274397144 is an apocalyptic number.

It is an amenable number.

1274397144 is an abundant number, since it is smaller than the sum of its proper divisors (1912518696).

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

1274397144 is a wasteful number, since it uses less digits than its factorization.

1274397144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15391 (or 15387 counting only the distinct ones).

The product of its digits is 169344, while the sum is 42.

The square root of 1274397144 is about 35698.6994721096. The cubic root of 1274397144 is about 1084.1805116889.

The spelling of 1274397144 in words is "one billion, two hundred seventy-four million, three hundred ninety-seven thousand, one hundred forty-four".