72420699 has 8 divisors (see below), whose sum is σ = 103988752. Its totient is φ = 44566560.

The previous prime is 72420679. The next prime is 72420701. The reversal of 72420699 is 99602427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72420699 - 2⁸ = 72420443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1856941 = 72420699 / (7 + 2 + 4 + 2 + 0 + 6 + 9 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72420679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 928432 + ... + 928509.

It is an arithmetic number, because the mean of its divisors is an integer number (12998594).

Almost surely, 2^72420699 is an apocalyptic number.

72420699 is a deficient number, since it is larger than the sum of its proper divisors (31568053).

72420699 is a wasteful number, since it uses less digits than its factorization.

72420699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856957.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 72420699 is about 8510.0351938168. The cubic root of 72420699 is about 416.8254593338.

The spelling of 72420699 in words is "seventy-two million, four hundred twenty thousand, six hundred ninety-nine".