122490020 has 12 divisors (see below), whose sum is σ = 257229084. Its totient is φ = 48996000.

The previous prime is 122489999. The next prime is 122490031. The reversal of 122490020 is 20094221.

It can be written as a sum of positive squares in 2 ways, for example, as 53699584 + 68790436 = 7328^2 + 8294^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 6124501 = 122490020 / (1 + 2 + 2 + 4 + 9 + 0 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 122489974 and 122490001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3062231 + ... + 3062270.

It is an arithmetic number, because the mean of its divisors is an integer number (21435757).

Almost surely, 2^122490020 is an apocalyptic number.

122490020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122490020 is an abundant number, since it is smaller than the sum of its proper divisors (134739064).

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

122490020 is a wasteful number, since it uses less digits than its factorization.

122490020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6124510 (or 6124508 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 122490020 is about 11067.5209509628. The cubic root of 122490020 is about 496.6307067239.

The spelling of 122490020 in words is "one hundred twenty-two million, four hundred ninety thousand, twenty".