1271274004 has 96 divisors (see below), whose sum is σ = 3025612800. Its totient is φ = 451301760.

The previous prime is 1271273959. The next prime is 1271274007. The reversal of 1271274004 is 4004721721.

It is a super-2 number, since 2×1271274004² = 3232275186492384032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271274007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 314307 + ... + 318325.

It is an arithmetic number, because the mean of its divisors is an integer number (31516800).

Almost surely, 2^1271274004 is an apocalyptic number.

1271274004 is a gapful number since it is divisible by the number (14) 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 1271274004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1512806400).

1271274004 is an abundant number, since it is smaller than the sum of its proper divisors (1754338796).

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

1271274004 is a wasteful number, since it uses less digits than its factorization.

1271274004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4133 (or 4131 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 1271274004 is about 35654.9295890484. The cubic root of 1271274004 is about 1083.2941272649.

Adding to 1271274004 its reverse (4004721721), we get a palindrome (5275995725).

It can be divided in two parts, 127127 and 4004, that added together give a palindrome (131131).

The spelling of 1271274004 in words is "one billion, two hundred seventy-one million, two hundred seventy-four thousand, four".