121424013544 has 24 divisors (see below), whose sum is σ = 241850169990. Its totient is φ = 57140711168.

The previous prime is 121424013533. The next prime is 121424013559. The reversal of 121424013544 is 445310424121.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 97850096100 + 23573917444 = 312810^2 + 153538^2 .

It is a super-4 number, since 4×121424013544⁴ (a number of 45 digits) contains 4444 as substring.

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 in 5 ways as a sum of consecutive naturals, for example, 26257207 + ... + 26261830.

Almost surely, 2^121424013544 is an apocalyptic number.

It is an amenable number.

121424013544 is a deficient number, since it is larger than the sum of its proper divisors (120426156446).

121424013544 is a wasteful number, since it uses less digits than its factorization.

121424013544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52519077 (or 52519056 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 121424013544 its reverse (445310424121), we get a palindrome (566734437665).

The spelling of 121424013544 in words is "one hundred twenty-one billion, four hundred twenty-four million, thirteen thousand, five hundred forty-four".