72141657 has 16 divisors (see below), whose sum is σ = 110635392. Its totient is φ = 40959360.

The previous prime is 72141653. The next prime is 72141677. The reversal of 72141657 is 75614127.

It is not a de Polignac number, because 72141657 - 2² = 72141653 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72141653) 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, 7644 + ... + 14237.

It is an arithmetic number, because the mean of its divisors is an integer number (6914712).

Almost surely, 2^72141657 is an apocalyptic number.

It is an amenable number.

72141657 is a deficient number, since it is larger than the sum of its proper divisors (38493735).

72141657 is a wasteful number, since it uses less digits than its factorization.

72141657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22048.

The product of its digits is 11760, while the sum is 33.

The square root of 72141657 is about 8493.6244913464. The cubic root of 72141657 is about 416.2894177607.

The spelling of 72141657 in words is "seventy-two million, one hundred forty-one thousand, six hundred fifty-seven".