122572745 has 4 divisors (see below), whose sum is σ = 147087300. Its totient is φ = 98058192.

The previous prime is 122572711. The next prime is 122572811. The reversal of 122572745 is 547275221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 547275221 = 19 ⋅28803959.

It can be written as a sum of positive squares in 2 ways, for example, as 79905721 + 42667024 = 8939^2 + 6532^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122572745 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12257270 + ... + 12257279.

It is an arithmetic number, because the mean of its divisors is an integer number (36771825).

Almost surely, 2^122572745 is an apocalyptic number.

It is an amenable number.

122572745 is a deficient number, since it is larger than the sum of its proper divisors (24514555).

122572745 is an equidigital number, since it uses as much as digits as its factorization.

122572745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24514554.

The product of its digits is 39200, while the sum is 35.

The square root of 122572745 is about 11071.2576069749. The cubic root of 122572745 is about 496.7424832585.

The spelling of 122572745 in words is "one hundred twenty-two million, five hundred seventy-two thousand, seven hundred forty-five".