641676942 has 12 divisors (see below), whose sum is σ = 1390300080. Its totient is φ = 213892308.

The previous prime is 641676923. The next prime is 641676961. The reversal of 641676942 is 249676146.

It is an interprime number because it is at equal distance from previous prime (641676923) and next prime (641676961).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17824342 + ... + 17824377.

It is an arithmetic number, because the mean of its divisors is an integer number (115858340).

Almost surely, 2^641676942 is an apocalyptic number.

641676942 is an abundant number, since it is smaller than the sum of its proper divisors (748623138).

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

641676942 is a wasteful number, since it uses less digits than its factorization.

641676942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35648727 (or 35648724 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 641676942 is about 25331.3430753286. The cubic root of 641676942 is about 862.5258991593.

The spelling of 641676942 in words is "six hundred forty-one million, six hundred seventy-six thousand, nine hundred forty-two".