73422139 has 6 divisors (see below), whose sum is σ = 85409484. Its totient is φ = 62933220.

The previous prime is 73422121. The next prime is 73422161. The reversal of 73422139 is 93122437.

It is not a de Polignac number, because 73422139 - 2⁹ = 73421627 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73422139.

It is not an unprimeable number, because it can be changed into a prime (73422109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 749157 + ... + 749254.

It is an arithmetic number, because the mean of its divisors is an integer number (14234914).

Almost surely, 2^73422139 is an apocalyptic number.

73422139 is a deficient number, since it is larger than the sum of its proper divisors (11987345).

73422139 is a wasteful number, since it uses less digits than its factorization.

73422139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498425 (or 1498418 counting only the distinct ones).

The product of its digits is 9072, while the sum is 31.

The square root of 73422139 is about 8568.6719507751. The cubic root of 73422139 is about 418.7379708730.

The spelling of 73422139 in words is "seventy-three million, four hundred twenty-two thousand, one hundred thirty-nine".