122701657 has 8 divisors (see below), whose sum is σ = 135712136. Its totient is φ = 110201472.

The previous prime is 122701637. The next prime is 122701693. The reversal of 122701657 is 756107221.

It can be written as a sum of positive squares in 4 ways, for example, as 49787136 + 72914521 = 7056^2 + 8539^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122701657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122701637) 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 7 ways as a sum of consecutive naturals, for example, 127068 + ... + 128029.

It is an arithmetic number, because the mean of its divisors is an integer number (16964017).

Almost surely, 2^122701657 is an apocalyptic number.

It is an amenable number.

122701657 is a deficient number, since it is larger than the sum of its proper divisors (13010479).

122701657 is a wasteful number, since it uses less digits than its factorization.

122701657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255147.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 122701657 is about 11077.0779991837. The cubic root of 122701657 is about 496.9165666319.

Adding to 122701657 its reverse (756107221), we get a palindrome (878808878).

The spelling of 122701657 in words is "one hundred twenty-two million, seven hundred one thousand, six hundred fifty-seven".