78067542 has 32 divisors (see below), whose sum is σ = 187833600. Its totient is φ = 21130848.

The previous prime is 78067541. The next prime is 78067547. The reversal of 78067542 is 24576087.

It is a super-2 number, since 2×78067542² = 12189082227843528, 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 78067542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78067541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48117 + ... + 49712.

It is an arithmetic number, because the mean of its divisors is an integer number (5869800).

Almost surely, 2^78067542 is an apocalyptic number.

78067542 is an abundant number, since it is smaller than the sum of its proper divisors (109766058).

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

78067542 is a wasteful number, since it uses less digits than its factorization.

78067542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97860.

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 78067542 is about 8835.5838516761. The cubic root of 78067542 is about 427.3891590482.

The spelling of 78067542 in words is "seventy-eight million, sixty-seven thousand, five hundred forty-two".