122539387 has 8 divisors (see below), whose sum is σ = 125452800. Its totient is φ = 119638824.

The previous prime is 122539309. The next prime is 122539393. The reversal of 122539387 is 783935221.

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

It is a cyclic number.

It is not a de Polignac number, because 122539387 - 2⁷ = 122539259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122533387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17664 + ... + 23602.

It is an arithmetic number, because the mean of its divisors is an integer number (15681600).

Almost surely, 2^122539387 is an apocalyptic number.

122539387 is a deficient number, since it is larger than the sum of its proper divisors (2913413).

122539387 is an equidigital number, since it uses as much as digits as its factorization.

122539387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6425.

The product of its digits is 90720, while the sum is 40.

The square root of 122539387 is about 11069.7509908760. The cubic root of 122539387 is about 496.6974165808.

The spelling of 122539387 in words is "one hundred twenty-two million, five hundred thirty-nine thousand, three hundred eighty-seven".