78174042 has 16 divisors (see below), whose sum is σ = 157399200. Its totient is φ = 25882832.

The previous prime is 78173947. The next prime is 78174049. The reversal of 78174042 is 24047187.

It is a super-2 number, since 2×78174042² = 12222361685235528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78173994 and 78174012.

It is not an unprimeable number, because it can be changed into a prime (78174049) 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, 42828 + ... + 44615.

It is an arithmetic number, because the mean of its divisors is an integer number (9837450).

Almost surely, 2^78174042 is an apocalyptic number.

78174042 is an abundant number, since it is smaller than the sum of its proper divisors (79225158).

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

78174042 is a wasteful number, since it uses less digits than its factorization.

78174042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87597.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 78174042 is about 8841.6085640567. The cubic root of 78174042 is about 427.5834193081.

The spelling of 78174042 in words is "seventy-eight million, one hundred seventy-four thousand, forty-two".