122157437 has 4 divisors (see below), whose sum is σ = 122229660. Its totient is φ = 122085216.

The previous prime is 122157419. The next prime is 122157493. The reversal of 122157437 is 734751221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25999801 + 96157636 = 5099^2 + 9806^2 .

It is a cyclic number.

It is not a de Polignac number, because 122157437 - 2¹⁰ = 122156413 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 (122157337) 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, 33512 + ... + 36977.

It is an arithmetic number, because the mean of its divisors is an integer number (30557415).

Almost surely, 2^122157437 is an apocalyptic number.

It is an amenable number.

122157437 is a deficient number, since it is larger than the sum of its proper divisors (72223).

122157437 is an equidigital number, since it uses as much as digits as its factorization.

122157437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72222.

The product of its digits is 11760, while the sum is 32.

The square root of 122157437 is about 11052.4855575567. The cubic root of 122157437 is about 496.1808179735.

The spelling of 122157437 in words is "one hundred twenty-two million, one hundred fifty-seven thousand, four hundred thirty-seven".