2042453901 has 4 divisors (see below), whose sum is σ = 2723271872. Its totient is φ = 1361635932.

The previous prime is 2042453893. The next prime is 2042453927. The reversal of 2042453901 is 1093542402.

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 not a de Polignac number, because 2042453901 - 2³ = 2042453893 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 (2042453971) 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, 340408981 + ... + 340408986.

It is an arithmetic number, because the mean of its divisors is an integer number (680817968).

Almost surely, 2^2042453901 is an apocalyptic number.

It is an amenable number.

2042453901 is a deficient number, since it is larger than the sum of its proper divisors (680817971).

2042453901 is an equidigital number, since it uses as much as digits as its factorization.

2042453901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680817970.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2042453901 is about 45193.5161389330. The cubic root of 2042453901 is about 1268.7734662488.

The spelling of 2042453901 in words is "two billion, forty-two million, four hundred fifty-three thousand, nine hundred one".