122123400 has 96 divisors (see below), whose sum is σ = 432680640. Its totient is φ = 27912960.

The previous prime is 122123383. The next prime is 122123401. The reversal of 122123400 is 4321221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 122123400.

It is not an unprimeable number, because it can be changed into a prime (122123401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10339 + ... + 18738.

It is an arithmetic number, because the mean of its divisors is an integer number (4507090).

Almost surely, 2^122123400 is an apocalyptic number.

122123400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122123400 is an abundant number, since it is smaller than the sum of its proper divisors (310557240).

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

122123400 is a wasteful number, since it uses less digits than its factorization.

122123400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29103 (or 29094 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 122123400 is about 11050.9456608926. The cubic root of 122123400 is about 496.1347297022.

Adding to 122123400 its reverse (4321221), we get a palindrome (126444621).

The spelling of 122123400 in words is "one hundred twenty-two million, one hundred twenty-three thousand, four hundred".