122664156 has 12 divisors (see below), whose sum is σ = 286216392. Its totient is φ = 40888048.

The previous prime is 122664151. The next prime is 122664173. The reversal of 122664156 is 651466221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122664151) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5110995 + ... + 5111018.

It is an arithmetic number, because the mean of its divisors is an integer number (23851366).

Almost surely, 2^122664156 is an apocalyptic number.

It is an amenable number.

122664156 is an abundant number, since it is smaller than the sum of its proper divisors (163552236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122664156 is a wasteful number, since it uses less digits than its factorization.

122664156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10222020 (or 10222018 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 122664156 is about 11075.3851400301. The cubic root of 122664156 is about 496.8659376853.

The spelling of 122664156 in words is "one hundred twenty-two million, six hundred sixty-four thousand, one hundred fifty-six".