72141907 has 4 divisors (see below), whose sum is σ = 72885736. Its totient is φ = 71398080.

The previous prime is 72141889. The next prime is 72141913. The reversal of 72141907 is 70914127.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72141907 - 2⁷ = 72141779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72141947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371769 + ... + 371962.

It is an arithmetic number, because the mean of its divisors is an integer number (18221434).

Almost surely, 2^72141907 is an apocalyptic number.

72141907 is a deficient number, since it is larger than the sum of its proper divisors (743829).

72141907 is an equidigital number, since it uses as much as digits as its factorization.

72141907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743828.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 72141907 is about 8493.6392082546. The cubic root of 72141907 is about 416.2898986305.

The spelling of 72141907 in words is "seventy-two million, one hundred forty-one thousand, nine hundred seven".