121254202542424 has 64 divisors (see below), whose sum is σ = 262220127840000. Its totient is φ = 51488169602688.

The previous prime is 121254202542331. The next prime is 121254202542443. The reversal of 121254202542424 is 424245202452121.

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, 303407167 + ... + 303806545.

It is an arithmetic number, because the mean of its divisors is an integer number (4097189497500).

Almost surely, 2^{121254202542424} is an apocalyptic number.

121254202542424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121254202542424 is an abundant number, since it is smaller than the sum of its proper divisors (140965925297576).

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

121254202542424 is a wasteful number, since it uses less digits than its factorization.

121254202542424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449240 (or 449236 counting only the distinct ones).

The product of its (nonzero) digits is 409600, while the sum is 40.

Adding to 121254202542424 its reverse (424245202452121), we get a palindrome (545499404994545).

The spelling of 121254202542424 in words is "one hundred twenty-one trillion, two hundred fifty-four billion, two hundred two million, five hundred forty-two thousand, four hundred twenty-four".