122072500 has 120 divisors (see below), whose sum is σ = 305452224. Its totient is φ = 42240000.

The previous prime is 122072471. The next prime is 122072507. The reversal of 122072500 is 5270221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122072507) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 632404 + ... + 632596.

Almost surely, 2^122072500 is an apocalyptic number.

122072500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122072500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152726112).

122072500 is an abundant number, since it is smaller than the sum of its proper divisors (183379724).

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

122072500 is a wasteful number, since it uses less digits than its factorization.

122072500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 122072500 is about 11048.6424505457. The cubic root of 122072500 is about 496.0657918710.

The spelling of 122072500 in words is "one hundred twenty-two million, seventy-two thousand, five hundred".