122879247 has 8 divisors (see below), whose sum is σ = 173476656. Its totient is φ = 77100672.

The previous prime is 122879227. The next prime is 122879269. The reversal of 122879247 is 742978221.

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

It is a de Polignac number, because none of the positive numbers 2^k-122879247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122879199 and 122879208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122879227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1204648 + ... + 1204749.

It is an arithmetic number, because the mean of its divisors is an integer number (21684582).

Almost surely, 2^122879247 is an apocalyptic number.

122879247 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

122879247 is a deficient number, since it is larger than the sum of its proper divisors (50597409).

122879247 is a wasteful number, since it uses less digits than its factorization.

122879247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2409417.

The product of its digits is 112896, while the sum is 42.

The square root of 122879247 is about 11085.0912039550. The cubic root of 122879247 is about 497.1561854358.

The spelling of 122879247 in words is "one hundred twenty-two million, eight hundred seventy-nine thousand, two hundred forty-seven".