122042900 has 36 divisors (see below), whose sum is σ = 302668128. Its totient is φ = 41843040.

The previous prime is 122042891. The next prime is 122042903. The reversal of 122042900 is 9240221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122042903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86474 + ... + 87873.

It is an arithmetic number, because the mean of its divisors is an integer number (8407448).

Almost surely, 2^122042900 is an apocalyptic number.

122042900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122042900 is an abundant number, since it is smaller than the sum of its proper divisors (180625228).

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

122042900 is a wasteful number, since it uses less digits than its factorization.

122042900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174368 (or 174361 counting only the distinct ones).

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

The square root of 122042900 is about 11047.3028382497. The cubic root of 122042900 is about 496.0256934748.

The spelling of 122042900 in words is "one hundred twenty-two million, forty-two thousand, nine hundred".