122941544978 has 18 divisors (see below), whose sum is σ = 214526507751. Its totient is φ = 52687745964.

The previous prime is 122941544977. The next prime is 122941544993. The reversal of 122941544978 is 879445149221.

It can be written as a sum of positive squares in only one way, i.e., 61470772489 + 61470772489 = 247933^2 + 247933^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=247933.

It is a super-2 number, since 2×122941544978² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122941544977) by changing a digit.

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 in 8 ways as a sum of consecutive naturals, for example, 3453353 + ... + 3488771.

Almost surely, 2^122941544978 is an apocalyptic number.

122941544978 is a deficient number, since it is larger than the sum of its proper divisors (91584962773).

122941544978 is an frugal number, since it uses more digits than its factorization.

122941544978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70854 (or 35428 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 56.

The spelling of 122941544978 in words is "one hundred twenty-two billion, nine hundred forty-one million, five hundred forty-four thousand, nine hundred seventy-eight".