122400397 has 8 divisors (see below), whose sum is σ = 142257600. Its totient is φ = 103136064.

The previous prime is 122400353. The next prime is 122400437. The reversal of 122400397 is 793004221.

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

It is a cyclic number.

It is not a de Polignac number, because 122400397 - 2⁷ = 122400269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122400347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147772 + ... + 148597.

It is an arithmetic number, because the mean of its divisors is an integer number (17782200).

Almost surely, 2^122400397 is an apocalyptic number.

It is an amenable number.

122400397 is a deficient number, since it is larger than the sum of its proper divisors (19857203).

122400397 is an equidigital number, since it uses as much as digits as its factorization.

122400397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296435.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 122400397 is about 11063.4712906935. The cubic root of 122400397 is about 496.5095529249.

The spelling of 122400397 in words is "one hundred twenty-two million, four hundred thousand, three hundred ninety-seven".