120024100421 has 4 divisors (see below), whose sum is σ = 120633360012. Its totient is φ = 119414840832.

The previous prime is 120024100411. The next prime is 120024100429. The reversal of 120024100421 is 124001420021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124001420021 = 67 ⋅1850767463.

It can be written as a sum of positive squares in 2 ways, for example, as 112701875521 + 7322224900 = 335711^2 + 85570^2 .

It is a cyclic number.

It is not a de Polignac number, because 120024100421 - 2²² = 120019906117 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 120024100421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120024100429) 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, 304629500 + ... + 304629893.

It is an arithmetic number, because the mean of its divisors is an integer number (30158340003).

Almost surely, 2^120024100421 is an apocalyptic number.

It is an amenable number.

120024100421 is a deficient number, since it is larger than the sum of its proper divisors (609259591).

120024100421 is an equidigital number, since it uses as much as digits as its factorization.

120024100421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609259590.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 120024100421 its reverse (124001420021), we get a palindrome (244025520442).

The spelling of 120024100421 in words is "one hundred twenty billion, twenty-four million, one hundred thousand, four hundred twenty-one".