122770839 has 4 divisors (see below), whose sum is σ = 163694456. Its totient is φ = 81847224.

The previous prime is 122770831. The next prime is 122770841. The reversal of 122770839 is 938077221.

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

It is not a de Polignac number, because 122770839 - 2³ = 122770831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122770797 and 122770806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122770831) 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, 20461804 + ... + 20461809.

It is an arithmetic number, because the mean of its divisors is an integer number (40923614).

Almost surely, 2^122770839 is an apocalyptic number.

122770839 is a deficient number, since it is larger than the sum of its proper divisors (40923617).

122770839 is an equidigital number, since it uses as much as digits as its factorization.

122770839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40923616.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 122770839 is about 11080.2003140737. The cubic root of 122770839 is about 497.0099400598.

The spelling of 122770839 in words is "one hundred twenty-two million, seven hundred seventy thousand, eight hundred thirty-nine".