122740827 has 32 divisors (see below), whose sum is σ = 183409920. Its totient is φ = 72987200.

The previous prime is 122740823. The next prime is 122740831. The reversal of 122740827 is 728047221.

It is an interprime number because it is at equal distance from previous prime (122740823) and next prime (122740831).

It is not a de Polignac number, because 122740827 - 2² = 122740823 is a prime.

It is a super-2 number, since 2×122740827² = 30130621225287858, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (122740823) 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 31 ways as a sum of consecutive naturals, for example, 235327 + ... + 235847.

It is an arithmetic number, because the mean of its divisors is an integer number (5731560).

Almost surely, 2^122740827 is an apocalyptic number.

122740827 is a deficient number, since it is larger than the sum of its proper divisors (60669093).

122740827 is an equidigital number, since it uses as much as digits as its factorization.

122740827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 122740827 is about 11078.8459236511. The cubic root of 122740827 is about 496.9694378307.

The spelling of 122740827 in words is "one hundred twenty-two million, seven hundred forty thousand, eight hundred twenty-seven".