122915539 has 2 divisors, whose sum is σ = 122915540. Its totient is φ = 122915538.

The previous prime is 122915537. The next prime is 122915557. The reversal of 122915539 is 935519221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122915539 - 2¹ = 122915537 is a prime.

Together with 122915537, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 122915498 and 122915507.

It is not a weakly prime, because it can be changed into another prime (122915537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61457769 + 61457770.

It is an arithmetic number, because the mean of its divisors is an integer number (61457770).

Almost surely, 2^122915539 is an apocalyptic number.

122915539 is a deficient number, since it is larger than the sum of its proper divisors (1).

122915539 is an equidigital number, since it uses as much as digits as its factorization.

122915539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24300, while the sum is 37.

The square root of 122915539 is about 11086.7280565548. The cubic root of 122915539 is about 497.2051251244.

The spelling of 122915539 in words is "one hundred twenty-two million, nine hundred fifteen thousand, five hundred thirty-nine".