122978763 has 16 divisors (see below), whose sum is σ = 188474400. Its totient is φ = 79158240.

The previous prime is 122978761. The next prime is 122978771. The reversal of 122978763 is 367879221.

It is not a de Polignac number, because 122978763 - 2¹ = 122978761 is a prime.

It is a super-2 number, since 2×122978763² = 30247552298020338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122978761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77748 + ... + 79313.

It is an arithmetic number, because the mean of its divisors is an integer number (11779650).

Almost surely, 2^122978763 is an apocalyptic number.

122978763 is a deficient number, since it is larger than the sum of its proper divisors (65495637).

122978763 is a wasteful number, since it uses less digits than its factorization.

122978763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157099 (or 157093 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 122978763 is about 11089.5790271768. The cubic root of 122978763 is about 497.2903595568.

The spelling of 122978763 in words is "one hundred twenty-two million, nine hundred seventy-eight thousand, seven hundred sixty-three".