122718147 has 4 divisors (see below), whose sum is σ = 163624200. Its totient is φ = 81812096.

The previous prime is 122718137. The next prime is 122718191. The reversal of 122718147 is 741817221.

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

It is a cyclic number.

It is not a de Polignac number, because 122718147 - 2¹⁶ = 122652611 is a prime.

It is a super-2 number, since 2×122718147² = 30119487206227218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122718137) 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 3 ways as a sum of consecutive naturals, for example, 20453022 + ... + 20453027.

It is an arithmetic number, because the mean of its divisors is an integer number (40906050).

Almost surely, 2^122718147 is an apocalyptic number.

122718147 is a deficient number, since it is larger than the sum of its proper divisors (40906053).

122718147 is an equidigital number, since it uses as much as digits as its factorization.

122718147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40906052.

The product of its digits is 6272, while the sum is 33.

The square root of 122718147 is about 11077.8223040451. The cubic root of 122718147 is about 496.9388260084.

The spelling of 122718147 in words is "one hundred twenty-two million, seven hundred eighteen thousand, one hundred forty-seven".