122153128 has 64 divisors (see below), whose sum is σ = 250776000. Its totient is φ = 55590912.

The previous prime is 122153107. The next prime is 122153131. The reversal of 122153128 is 821351221.

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, 475176 + ... + 475432.

It is an arithmetic number, because the mean of its divisors is an integer number (3918375).

Almost surely, 2^122153128 is an apocalyptic number.

It is an amenable number.

122153128 is an abundant number, since it is smaller than the sum of its proper divisors (128622872).

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

122153128 is a wasteful number, since it uses less digits than its factorization.

122153128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 390 counting only the distinct ones).

The product of its digits is 960, while the sum is 25.

The square root of 122153128 is about 11052.2906223099. The cubic root of 122153128 is about 496.1749837857.

The spelling of 122153128 in words is "one hundred twenty-two million, one hundred fifty-three thousand, one hundred twenty-eight".