122745216 has 64 divisors (see below), whose sum is σ = 355694400. Its totient is φ = 37194240.

The previous prime is 122745211. The next prime is 122745251. The reversal of 122745216 is 612547221.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122745211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10306 + ... + 18753.

It is an arithmetic number, because the mean of its divisors is an integer number (5557725).

Almost surely, 2^122745216 is an apocalyptic number.

122745216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

122745216 is an abundant number, since it is smaller than the sum of its proper divisors (232949184).

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

122745216 is a wasteful number, since it uses less digits than its factorization.

122745216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29087 (or 29075 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 122745216 is about 11079.0440020789. The cubic root of 122745216 is about 496.9753613497.

The spelling of 122745216 in words is "one hundred twenty-two million, seven hundred forty-five thousand, two hundred sixteen".