72507542 has 16 divisors (see below), whose sum is σ = 110644800. Its totient is φ = 35629632.

The previous prime is 72507527. The next prime is 72507577. The reversal of 72507542 is 24570527.

It is a junction number, because it is equal to n+sod(n) for n = 72507499 and 72507508.

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, 50243 + ... + 51665.

It is an arithmetic number, because the mean of its divisors is an integer number (6915300).

Almost surely, 2^72507542 is an apocalyptic number.

72507542 is a deficient number, since it is larger than the sum of its proper divisors (38137258).

72507542 is a wasteful number, since it uses less digits than its factorization.

72507542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847.

The product of its (nonzero) digits is 19600, while the sum is 32.

The square root of 72507542 is about 8515.1360529354. The cubic root of 72507542 is about 416.9920043246.

The spelling of 72507542 in words is "seventy-two million, five hundred seven thousand, five hundred forty-two".