72542270 has 16 divisors (see below), whose sum is σ = 132790320. Its totient is φ = 28524864.

The previous prime is 72542269. The next prime is 72542317. The reversal of 72542270 is 7224527.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 60887 + ... + 62066.

It is an arithmetic number, because the mean of its divisors is an integer number (8299395).

Almost surely, 2^72542270 is an apocalyptic number.

72542270 is a deficient number, since it is larger than the sum of its proper divisors (60248050).

72542270 is a wasteful number, since it uses less digits than its factorization.

72542270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123019.

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 72542270 is about 8517.1750011374. The cubic root of 72542270 is about 417.0585674553.

Adding to 72542270 its reverse (7224527), we get a palindrome (79766797).

The spelling of 72542270 in words is "seventy-two million, five hundred forty-two thousand, two hundred seventy".