12420145254 has 32 divisors (see below), whose sum is σ = 27104356224. Its totient is φ = 3762866880.

The previous prime is 12420145219. The next prime is 12420145261. The reversal of 12420145254 is 45254102421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333642 + ... + 368994.

It is an arithmetic number, because the mean of its divisors is an integer number (847011132).

Almost surely, 2^12420145254 is an apocalyptic number.

12420145254 is an abundant number, since it is smaller than the sum of its proper divisors (14684210970).

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

12420145254 is a wasteful number, since it uses less digits than its factorization.

12420145254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40692.

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 12420145254 its reverse (45254102421), we get a palindrome (57674247675).

It can be divided in two parts, 124 and 20145254, that added together give a triangular number (20145378 = T₆₃₄₇).

The spelling of 12420145254 in words is "twelve billion, four hundred twenty million, one hundred forty-five thousand, two hundred fifty-four".