80739542 has 16 divisors (see below), whose sum is σ = 130667712. Its totient is φ = 37195200.

The previous prime is 80739541. The next prime is 80739551. The reversal of 80739542 is 24593708.

It is a junction number, because it is equal to n+sod(n) for n = 80739496 and 80739505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80739541) 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, 13043 + ... + 18209.

It is an arithmetic number, because the mean of its divisors is an integer number (8166732).

Almost surely, 2^80739542 is an apocalyptic number.

80739542 is a deficient number, since it is larger than the sum of its proper divisors (49928170).

80739542 is a wasteful number, since it uses less digits than its factorization.

80739542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5783.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 80739542 is about 8985.5184602782. The cubic root of 80739542 is about 432.2106133236.

The spelling of 80739542 in words is "eighty million, seven hundred thirty-nine thousand, five hundred forty-two".