122417859 has 4 divisors (see below), whose sum is σ = 163223816. Its totient is φ = 81611904.

The previous prime is 122417851. The next prime is 122417873. The reversal of 122417859 is 958714221.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 122417859 - 2³ = 122417851 is a prime.

It is a super-2 number, since 2×122417859² = 29972264404287762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122417851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20402974 + ... + 20402979.

It is an arithmetic number, because the mean of its divisors is an integer number (40805954).

Almost surely, 2^122417859 is an apocalyptic number.

122417859 is a deficient number, since it is larger than the sum of its proper divisors (40805957).

122417859 is an equidigital number, since it uses as much as digits as its factorization.

122417859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40805956.

The product of its digits is 40320, while the sum is 39.

The square root of 122417859 is about 11064.2604361973. The cubic root of 122417859 is about 496.5331629724.

It can be divided in two parts, 12241 and 7859, that added together give a triangular number (20100 = T₂₀₀).

The spelling of 122417859 in words is "one hundred twenty-two million, four hundred seventeen thousand, eight hundred fifty-nine".