122355779 has 8 divisors (see below), whose sum is σ = 150591840. Its totient is φ = 96808896.

The previous prime is 122355773. The next prime is 122355823. The reversal of 122355779 is 977553221.

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 122355779 - 2¹² = 122351683 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (122355773) 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, 672194 + ... + 672375.

It is an arithmetic number, because the mean of its divisors is an integer number (18823980).

Almost surely, 2^122355779 is an apocalyptic number.

122355779 is a deficient number, since it is larger than the sum of its proper divisors (28236061).

122355779 is a wasteful number, since it uses less digits than its factorization.

122355779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344589.

The product of its digits is 132300, while the sum is 41.

The square root of 122355779 is about 11061.4546511750. The cubic root of 122355779 is about 496.4492155510.

The spelling of 122355779 in words is "one hundred twenty-two million, three hundred fifty-five thousand, seven hundred seventy-nine".