122551113042 has 54 divisors (see below), whose sum is σ = 268340269743. Its totient is φ = 40422128544.

The previous prime is 122551113037. The next prime is 122551113043. The reversal of 122551113042 is 240311155221.

It is a happy number.

122551113042 is a `hidden beast` number, since 12 + 2 + 5 + 511 + 130 + 4 + 2 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 98005937481 + 24545175561 = 313059^2 + 156669^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=247539.

It is a junction number, because it is equal to n+sod(n) for n = 122551112997 and 122551113015.

It is not an unprimeable number, because it can be changed into a prime (122551113043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 161890128 + ... + 161890884.

Almost surely, 2^122551113042 is an apocalyptic number.

122551113042 is an abundant number, since it is smaller than the sum of its proper divisors (145789156701).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122551113042 is an frugal number, since it uses more digits than its factorization.

122551113042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740 (or 871 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 122551113042 its reverse (240311155221), we get a palindrome (362862268263).

The spelling of 122551113042 in words is "one hundred twenty-two billion, five hundred fifty-one million, one hundred thirteen thousand, forty-two".