122690357 has 2 divisors, whose sum is σ = 122690358. Its totient is φ = 122690356.

The previous prime is 122690341. The next prime is 122690413. The reversal of 122690357 is 753096221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69122596 + 53567761 = 8314^2 + 7319^2 .

It is an emirp because it is prime and its reverse (753096221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122690357 - 2⁴ = 122690341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122690957) 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 as a sum of consecutive naturals, namely, 61345178 + 61345179.

It is an arithmetic number, because the mean of its divisors is an integer number (61345179).

Almost surely, 2^122690357 is an apocalyptic number.

It is an amenable number.

122690357 is a deficient number, since it is larger than the sum of its proper divisors (1).

122690357 is an equidigital number, since it uses as much as digits as its factorization.

122690357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 122690357 is about 11076.5679251292. The cubic root of 122690357 is about 496.9013119355.

The spelling of 122690357 in words is "one hundred twenty-two million, six hundred ninety thousand, three hundred fifty-seven".