78272942 has 16 divisors (see below), whose sum is σ = 128241792. Its totient is φ = 35534520.

The previous prime is 78272927. The next prime is 78272993. The reversal of 78272942 is 24927287.

It is a super-2 number, since 2×78272942² = 12253306898670728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78272942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21713 + ... + 25059.

It is an arithmetic number, because the mean of its divisors is an integer number (8015112).

Almost surely, 2^78272942 is an apocalyptic number.

78272942 is a deficient number, since it is larger than the sum of its proper divisors (49968850).

78272942 is a wasteful number, since it uses less digits than its factorization.

78272942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4423.

The product of its digits is 112896, while the sum is 41.

The square root of 78272942 is about 8847.1996699521. The cubic root of 78272942 is about 427.7636589307.

The spelling of 78272942 in words is "seventy-eight million, two hundred seventy-two thousand, nine hundred forty-two".