646410942 has 40 divisors (see below), whose sum is σ = 1487600136. Its totient is φ = 209644848.

The previous prime is 646410937. The next prime is 646410953. The reversal of 646410942 is 249014646.

646410942 is a `hidden beast` number, since 6 + 4 + 641 + 0 + 9 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 646410897 and 646410906.

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 19 ways as a sum of consecutive naturals, for example, 47928 + ... + 59915.

Almost surely, 2^646410942 is an apocalyptic number.

646410942 is an abundant number, since it is smaller than the sum of its proper divisors (841189194).

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

646410942 is a wasteful number, since it uses less digits than its factorization.

646410942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107894 (or 107885 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 646410942 is about 25424.6129174074. The cubic root of 646410942 is about 864.6418118929.

The spelling of 646410942 in words is "six hundred forty-six million, four hundred ten thousand, nine hundred forty-two".