122668457 has 4 divisors (see below), whose sum is σ = 126625536. Its totient is φ = 118711380.

The previous prime is 122668387. The next prime is 122668459. The reversal of 122668457 is 754866221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122668457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122668459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1978493 + ... + 1978554.

It is an arithmetic number, because the mean of its divisors is an integer number (31656384).

Almost surely, 2^122668457 is an apocalyptic number.

It is an amenable number.

122668457 is a deficient number, since it is larger than the sum of its proper divisors (3957079).

122668457 is an equidigital number, since it uses as much as digits as its factorization.

122668457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3957078.

The product of its digits is 161280, while the sum is 41.

The square root of 122668457 is about 11075.5793076480. The cubic root of 122668457 is about 496.8717448569.

The spelling of 122668457 in words is "one hundred twenty-two million, six hundred sixty-eight thousand, four hundred fifty-seven".