120020401 has 4 divisors (see below), whose sum is σ = 120277872. Its totient is φ = 119762932.

The previous prime is 120020399. The next prime is 120020423. The reversal of 120020401 is 104020021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 104020021 = 7 ⋅14860003.

It is a cyclic number.

It is not a de Polignac number, because 120020401 - 2¹ = 120020399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120020431) 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, 128035 + ... + 128968.

It is an arithmetic number, because the mean of its divisors is an integer number (30069468).

Almost surely, 2^120020401 is an apocalyptic number.

It is an amenable number.

120020401 is a deficient number, since it is larger than the sum of its proper divisors (257471).

120020401 is an equidigital number, since it uses as much as digits as its factorization.

120020401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257470.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 120020401 is about 10955.3822845212. The cubic root of 120020401 is about 493.2703650559.

Adding to 120020401 its reverse (104020021), we get a palindrome (224040422).

The spelling of 120020401 in words is "one hundred twenty million, twenty thousand, four hundred one".