122648957 has 4 divisors (see below), whose sum is σ = 123734460. Its totient is φ = 121563456.

The previous prime is 122648947. The next prime is 122648959. The reversal of 122648957 is 759846221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 759846221 = 983 ⋅772987.

It can be written as a sum of positive squares in 2 ways, for example, as 19545241 + 103103716 = 4421^2 + 10154^2 .

It is a cyclic number.

It is not a de Polignac number, because 122648957 - 2⁴ = 122648941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122648959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542582 + ... + 542807.

It is an arithmetic number, because the mean of its divisors is an integer number (30933615).

Almost surely, 2^122648957 is an apocalyptic number.

It is an amenable number.

122648957 is a deficient number, since it is larger than the sum of its proper divisors (1085503).

122648957 is a wasteful number, since it uses less digits than its factorization.

122648957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085502.

The product of its digits is 241920, while the sum is 44.

The square root of 122648957 is about 11074.6989575338. The cubic root of 122648957 is about 496.8454150443.

The spelling of 122648957 in words is "one hundred twenty-two million, six hundred forty-eight thousand, nine hundred fifty-seven".