72342537 has 16 divisors (see below), whose sum is σ = 97922880. Its totient is φ = 47500992.

The previous prime is 72342451. The next prime is 72342553. The reversal of 72342537 is 73524327.

It is not a de Polignac number, because 72342537 - 2¹⁰ = 72341513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72342498 and 72342507.

It is not an unprimeable number, because it can be changed into a prime (72342577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63858 + ... + 64980.

It is an arithmetic number, because the mean of its divisors is an integer number (6120180).

Almost surely, 2^72342537 is an apocalyptic number.

It is an amenable number.

72342537 is a deficient number, since it is larger than the sum of its proper divisors (25580343).

72342537 is a wasteful number, since it uses less digits than its factorization.

72342537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432.

The product of its digits is 35280, while the sum is 33.

The square root of 72342537 is about 8505.4416111099. The cubic root of 72342537 is about 416.6754486327.

The spelling of 72342537 in words is "seventy-two million, three hundred forty-two thousand, five hundred thirty-seven".