78982542 has 12 divisors (see below), whose sum is σ = 171128880. Its totient is φ = 26327508.

The previous prime is 78982517. The next prime is 78982559. The reversal of 78982542 is 24528987.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2193942 + ... + 2193977.

It is an arithmetic number, because the mean of its divisors is an integer number (14260740).

Almost surely, 2^78982542 is an apocalyptic number.

78982542 is an abundant number, since it is smaller than the sum of its proper divisors (92146338).

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

78982542 is a wasteful number, since it uses less digits than its factorization.

78982542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4387927 (or 4387924 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 78982542 is about 8887.2122738236. The cubic root of 78982542 is about 429.0524329934.

It can be divided in two parts, 78982 and 542, that added together give a square (79524 = 282²).

The spelling of 78982542 in words is "seventy-eight million, nine hundred eighty-two thousand, five hundred forty-two".