122520245494 has 4 divisors (see below), whose sum is σ = 183780368244. Its totient is φ = 61260122746.

The previous prime is 122520245489. The next prime is 122520245513. The reversal of 122520245494 is 494542025221.

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

It is a super-2 number, since 2×122520245494² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 30630061372 + ... + 30630061375.

It is an arithmetic number, because the mean of its divisors is an integer number (45945092061).

Almost surely, 2^122520245494 is an apocalyptic number.

122520245494 is a deficient number, since it is larger than the sum of its proper divisors (61260122750).

122520245494 is an equidigital number, since it uses as much as digits as its factorization.

122520245494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61260122749.

The product of its (nonzero) digits is 230400, while the sum is 40.

The spelling of 122520245494 in words is "one hundred twenty-two billion, five hundred twenty million, two hundred forty-five thousand, four hundred ninety-four".