122939653939 has 4 divisors (see below), whose sum is σ = 122942827224. Its totient is φ = 122936480656.

The previous prime is 122939653937. The next prime is 122939653979. The reversal of 122939653939 is 939356939221.

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

It is a cyclic number.

It is not a de Polignac number, because 122939653939 - 2¹ = 122939653937 is a prime.

It is a super-2 number, since 2×122939653939² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122939653937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1527802 + ... + 1606255.

It is an arithmetic number, because the mean of its divisors is an integer number (30735706806).

Almost surely, 2^122939653939 is an apocalyptic number.

122939653939 is a deficient number, since it is larger than the sum of its proper divisors (3173285).

122939653939 is an equidigital number, since it uses as much as digits as its factorization.

122939653939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3173284.

The product of its digits is 21257640, while the sum is 61.

The spelling of 122939653939 in words is "one hundred twenty-two billion, nine hundred thirty-nine million, six hundred fifty-three thousand, nine hundred thirty-nine".