122747755 has 16 divisors (see below), whose sum is σ = 163747584. Its totient is φ = 87719040.

The previous prime is 122747747. The next prime is 122747813. The reversal of 122747755 is 557747221.

It is not a de Polignac number, because 122747755 - 2³ = 122747747 is a prime.

It is a super-2 number, since 2×122747755² = 30134022715080050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28444 + ... + 32473.

It is an arithmetic number, because the mean of its divisors is an integer number (10234224).

Almost surely, 2^122747755 is an apocalyptic number.

122747755 is a deficient number, since it is larger than the sum of its proper divisors (40999829).

122747755 is a wasteful number, since it uses less digits than its factorization.

122747755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60966.

The product of its digits is 137200, while the sum is 40.

The square root of 122747755 is about 11079.1585871852. The cubic root of 122747755 is about 496.9787879917.

The spelling of 122747755 in words is "one hundred twenty-two million, seven hundred forty-seven thousand, seven hundred fifty-five".