68643042 has 32 divisors (see below), whose sum is σ = 156546432. Its totient is φ = 19878144.

The previous prime is 68643031. The next prime is 68643053. The reversal of 68643042 is 24034686.

It is an interprime number because it is at equal distance from previous prime (68643031) and next prime (68643053).

It is a junction number, because it is equal to n+sod(n) for n = 68642994 and 68643012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24558 + ... + 27209.

It is an arithmetic number, because the mean of its divisors is an integer number (4892076).

Almost surely, 2^68643042 is an apocalyptic number.

68643042 is an abundant number, since it is smaller than the sum of its proper divisors (87903390).

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

68643042 is a wasteful number, since it uses less digits than its factorization.

68643042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51802.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 68643042 is about 8285.1096552792. The cubic root of 68643042 is about 409.4480814849.

The spelling of 68643042 in words is "sixty-eight million, six hundred forty-three thousand, forty-two".