776531142 has 24 divisors (see below), whose sum is σ = 1683025344. Its totient is φ = 258760464.

The previous prime is 776531131. The next prime is 776531153. The reversal of 776531142 is 241135677.

It is a happy number.

776531142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (776531131) and next prime (776531153).

It is a super-2 number, since 2×776531142² = 1206001228991648328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 776531097 and 776531106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80068 + ... + 89240.

It is an arithmetic number, because the mean of its divisors is an integer number (70126056).

Almost surely, 2^776531142 is an apocalyptic number.

776531142 is an abundant number, since it is smaller than the sum of its proper divisors (906494202).

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

776531142 is a wasteful number, since it uses less digits than its factorization.

776531142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13884 (or 13881 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 776531142 is about 27866.3083669151. The cubic root of 776531142 is about 919.1497903003.

The spelling of 776531142 in words is "seven hundred seventy-six million, five hundred thirty-one thousand, one hundred forty-two".