124402104120421 has 16 divisors (see below), whose sum is σ = 134785366524864. Its totient is φ = 114359542343424.

The previous prime is 124402104120409. The next prime is 124402104120499. The reversal of 124402104120421 is 124021401204421.

It is a cyclic number.

It is not a de Polignac number, because 124402104120421 - 2³⁷ = 124264665166949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 124402104120421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124402104120401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43608331 + ... + 46373383.

It is an arithmetic number, because the mean of its divisors is an integer number (8424085407804).

Almost surely, 2^{124402104120421} is an apocalyptic number.

It is an amenable number.

124402104120421 is a deficient number, since it is larger than the sum of its proper divisors (10383262404443).

124402104120421 is a wasteful number, since it uses less digits than its factorization.

124402104120421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2826660.

The product of its (nonzero) digits is 4096, while the sum is 28.

Adding to 124402104120421 its reverse (124021401204421), we get a palindrome (248423505324842).

The spelling of 124402104120421 in words is "one hundred twenty-four trillion, four hundred two billion, one hundred four million, one hundred twenty thousand, four hundred twenty-one".