120421424401 has 4 divisors (see below), whose sum is σ = 120427196400. Its totient is φ = 120415652404.

The previous prime is 120421424393. The next prime is 120421424443. The reversal of 120421424401 is 104424124021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120421424401 - 2³ = 120421424393 is a prime.

It is a super-3 number, since 3×120421424401³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120421424801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2854591 + ... + 2896468.

It is an arithmetic number, because the mean of its divisors is an integer number (30106799100).

Almost surely, 2^120421424401 is an apocalyptic number.

It is an amenable number.

120421424401 is a deficient number, since it is larger than the sum of its proper divisors (5771999).

120421424401 is an equidigital number, since it uses as much as digits as its factorization.

120421424401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5771998.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 120421424401 its reverse (104424124021), we get a palindrome (224845548422).

The spelling of 120421424401 in words is "one hundred twenty billion, four hundred twenty-one million, four hundred twenty-four thousand, four hundred one".