122257402 has 8 divisors (see below), whose sum is σ = 183607200. Its totient is φ = 61055004.

The previous prime is 122257363. The next prime is 122257411. The reversal of 122257402 is 204752221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34752 + ... + 38107.

It is an arithmetic number, because the mean of its divisors is an integer number (22950900).

Almost surely, 2^122257402 is an apocalyptic number.

122257402 is a deficient number, since it is larger than the sum of its proper divisors (61349798).

122257402 is an equidigital number, since it uses as much as digits as its factorization.

122257402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73700.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 122257402 is about 11057.0069186919. The cubic root of 122257402 is about 496.3161274914.

The spelling of 122257402 in words is "one hundred twenty-two million, two hundred fifty-seven thousand, four hundred two".