120844421 has 4 divisors (see below), whose sum is σ = 125011500. Its totient is φ = 116677344.

The previous prime is 120844411. The next prime is 120844433. The reversal of 120844421 is 124448021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124448021 = 421 ⋅295601.

It can be written as a sum of positive squares in 2 ways, for example, as 95452900 + 25391521 = 9770^2 + 5039^2 .

It is a cyclic number.

It is not a de Polignac number, because 120844421 - 2⁶ = 120844357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120844411) 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, 2083496 + ... + 2083553.

It is an arithmetic number, because the mean of its divisors is an integer number (31252875).

Almost surely, 2^120844421 is an apocalyptic number.

It is an amenable number.

120844421 is a deficient number, since it is larger than the sum of its proper divisors (4167079).

120844421 is an equidigital number, since it uses as much as digits as its factorization.

120844421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4167078.

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 120844421 is about 10992.9259526297. The cubic root of 120844421 is about 494.3966679119.

The spelling of 120844421 in words is "one hundred twenty million, eight hundred forty-four thousand, four hundred twenty-one".