72842073 has 4 divisors (see below), whose sum is σ = 97122768. Its totient is φ = 48561380.

The previous prime is 72842039. The next prime is 72842083. The reversal of 72842073 is 37024827.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72842073 - 2¹³ = 72833881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72842083) 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, 12140343 + ... + 12140348.

It is an arithmetic number, because the mean of its divisors is an integer number (24280692).

Almost surely, 2^72842073 is an apocalyptic number.

It is an amenable number.

72842073 is a deficient number, since it is larger than the sum of its proper divisors (24280695).

72842073 is a wasteful number, since it uses less digits than its factorization.

72842073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24280694.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 72842073 is about 8534.7567627906. The cubic root of 72842073 is about 417.6323182498.

The spelling of 72842073 in words is "seventy-two million, eight hundred forty-two thousand, seventy-three".