2045420131 has 4 divisors (see below), whose sum is σ = 2045518200. Its totient is φ = 2045322064.

The previous prime is 2045420123. The next prime is 2045420137. The reversal of 2045420131 is 1310245402.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1310245402 = 2 ⋅655122701.

It is a cyclic number.

It is not a de Polignac number, because 2045420131 - 2³ = 2045420123 is a prime.

It is a super-2 number, since 2×2045420131² = 8367487024600114322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2045420137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3901 + ... + 64078.

It is an arithmetic number, because the mean of its divisors is an integer number (511379550).

Almost surely, 2^2045420131 is an apocalyptic number.

2045420131 is a deficient number, since it is larger than the sum of its proper divisors (98069).

2045420131 is an equidigital number, since it uses as much as digits as its factorization.

2045420131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98068.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2045420131 is about 45226.3212189539. The cubic root of 2045420131 is about 1269.3873770456.

Adding to 2045420131 its reverse (1310245402), we get a palindrome (3355665533).

The spelling of 2045420131 in words is "two billion, forty-five million, four hundred twenty thousand, one hundred thirty-one".