78371542 has 16 divisors (see below), whose sum is σ = 126624960. Its totient is φ = 36259272.

The previous prime is 78371539. The next prime is 78371549. The reversal of 78371542 is 24517387.

It is a super-2 number, since 2×78371542² = 12284197190915528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78371549) 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, 22348 + ... + 25615.

It is an arithmetic number, because the mean of its divisors is an integer number (7914060).

Almost surely, 2^78371542 is an apocalyptic number.

78371542 is a deficient number, since it is larger than the sum of its proper divisors (48253418).

78371542 is a wasteful number, since it uses less digits than its factorization.

78371542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48027.

The product of its digits is 47040, while the sum is 37.

The square root of 78371542 is about 8852.7703008719. The cubic root of 78371542 is about 427.9432007486.

The spelling of 78371542 in words is "seventy-eight million, three hundred seventy-one thousand, five hundred forty-two".