122615859 has 4 divisors (see below), whose sum is σ = 163487816. Its totient is φ = 81743904.

The previous prime is 122615813. The next prime is 122615861. The reversal of 122615859 is 958516221.

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

It is not a de Polignac number, because 122615859 - 2¹² = 122611763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122615879) 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, 20435974 + ... + 20435979.

It is an arithmetic number, because the mean of its divisors is an integer number (40871954).

Almost surely, 2^122615859 is an apocalyptic number.

122615859 is a deficient number, since it is larger than the sum of its proper divisors (40871957).

122615859 is an equidigital number, since it uses as much as digits as its factorization.

122615859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40871956.

The product of its digits is 43200, while the sum is 39.

The square root of 122615859 is about 11073.2045497227. The cubic root of 122615859 is about 496.8007181863.

The spelling of 122615859 in words is "one hundred twenty-two million, six hundred fifteen thousand, eight hundred fifty-nine".