1042645977 has 24 divisors (see below), whose sum is σ = 1572135240. Its totient is φ = 665210880.

The previous prime is 1042645951. The next prime is 1042646021. The reversal of 1042645977 is 7795462401.

1042645977 is a `hidden beast` number, since 10 + 42 + 6 + 4 + 597 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 269583561 + 773062416 = 16419^2 + 27804^2 .

It is not a de Polignac number, because 1042645977 - 2²³ = 1034257369 is a prime.

It is a super-2 number, since 2×1042645977² = 2174221266708569058, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1042645777) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5352 + ... + 45977.

It is an arithmetic number, because the mean of its divisors is an integer number (65505635).

Almost surely, 2^1042645977 is an apocalyptic number.

It is an amenable number.

1042645977 is a deficient number, since it is larger than the sum of its proper divisors (529489263).

1042645977 is a wasteful number, since it uses less digits than its factorization.

1042645977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51433 (or 51430 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 1042645977 is about 32290.0290647128. The cubic root of 1042645977 is about 1014.0179058029.

The spelling of 1042645977 in words is "one billion, forty-two million, six hundred forty-five thousand, nine hundred seventy-seven".