1042649187 has 8 divisors (see below), whose sum is σ = 1463367360. Its totient is φ = 658515240.

The previous prime is 1042649183. The next prime is 1042649191. The reversal of 1042649187 is 7819462401.

It is an interprime number because it is at equal distance from previous prime (1042649183) and next prime (1042649191).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1042649187 - 2² = 1042649183 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1042649183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9145989 + ... + 9146102.

It is an arithmetic number, because the mean of its divisors is an integer number (182920920).

Almost surely, 2^1042649187 is an apocalyptic number.

1042649187 is a deficient number, since it is larger than the sum of its proper divisors (420718173).

1042649187 is a wasteful number, since it uses less digits than its factorization.

1042649187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18292113.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 1042649187 is about 32290.0787704211. The cubic root of 1042649187 is about 1014.0189464227.

The spelling of 1042649187 in words is "one billion, forty-two million, six hundred forty-nine thousand, one hundred eighty-seven".