122740537 has 2 divisors, whose sum is σ = 122740538. Its totient is φ = 122740536.

The previous prime is 122740529. The next prime is 122740543. The reversal of 122740537 is 735047221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98327056 + 24413481 = 9916^2 + 4941^2 .

It is a cyclic number.

It is not a de Polignac number, because 122740537 - 2³ = 122740529 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 122740499 and 122740508.

It is not a weakly prime, because it can be changed into another prime (122740517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61370268 + 61370269.

It is an arithmetic number, because the mean of its divisors is an integer number (61370269).

Almost surely, 2^122740537 is an apocalyptic number.

It is an amenable number.

122740537 is a deficient number, since it is larger than the sum of its proper divisors (1).

122740537 is an equidigital number, since it uses as much as digits as its factorization.

122740537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 122740537 is about 11078.8328356375. The cubic root of 122740537 is about 496.9690464335.

Adding to 122740537 its reverse (735047221), we get a palindrome (857787758).

The spelling of 122740537 in words is "one hundred twenty-two million, seven hundred forty thousand, five hundred thirty-seven".