1277404052 has 12 divisors (see below), whose sum is σ = 2237752020. Its totient is φ = 638046336.

The previous prime is 1277404031. The next prime is 1277404057. The reversal of 1277404052 is 2504047721.

It can be written as a sum of positive squares in 2 ways, for example, as 1156272016 + 121132036 = 34004^2 + 11006^2 .

It is a super-2 number, since 2×1277404052² = 3263522224132037408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1277404057) 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 3 ways as a sum of consecutive naturals, for example, 159527 + ... + 167342.

It is an arithmetic number, because the mean of its divisors is an integer number (186479335).

Almost surely, 2^1277404052 is an apocalyptic number.

It is an amenable number.

1277404052 is a deficient number, since it is larger than the sum of its proper divisors (960347968).

1277404052 is a wasteful number, since it uses less digits than its factorization.

1277404052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327850 (or 327848 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 1277404052 is about 35740.7897506476. The cubic root of 1277404052 is about 1085.0325408066.

The spelling of 1277404052 in words is "one billion, two hundred seventy-seven million, four hundred four thousand, fifty-two".