122173945 has 16 divisors (see below), whose sum is σ = 151976448. Its totient is φ = 94187520.

The previous prime is 122173921. The next prime is 122173969. The reversal of 122173945 is 549371221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (122173921) and next prime (122173969).

It is not a de Polignac number, because 122173945 - 2⁵ = 122173913 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 122173945.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38302 + ... + 41368.

It is an arithmetic number, because the mean of its divisors is an integer number (9498528).

Almost surely, 2^122173945 is an apocalyptic number.

It is an amenable number.

122173945 is a deficient number, since it is larger than the sum of its proper divisors (29802503).

122173945 is a wasteful number, since it uses less digits than its factorization.

122173945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3360.

The product of its digits is 15120, while the sum is 34.

The square root of 122173945 is about 11053.2323326708. The cubic root of 122173945 is about 496.2031677767.

The spelling of 122173945 in words is "one hundred twenty-two million, one hundred seventy-three thousand, nine hundred forty-five".