78107942 has 16 divisors (see below), whose sum is σ = 128032272. Its totient is φ = 35442720.

The previous prime is 78107929. The next prime is 78107951. The reversal of 78107942 is 24970187.

It is a super-2 number, since 2×78107942² = 12201701206950728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78107896 and 78107905.

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, 11648 + ... + 17084.

It is an arithmetic number, because the mean of its divisors is an integer number (8002017).

Almost surely, 2^78107942 is an apocalyptic number.

78107942 is a deficient number, since it is larger than the sum of its proper divisors (49924330).

78107942 is a wasteful number, since it uses less digits than its factorization.

78107942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6103.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 78107942 is about 8837.8697659560. The cubic root of 78107942 is about 427.4628710501.

The spelling of 78107942 in words is "seventy-eight million, one hundred seven thousand, nine hundred forty-two".