2423142021 has 4 divisors (see below), whose sum is σ = 3230856032. Its totient is φ = 1615428012.

The previous prime is 2423142017. The next prime is 2423142041. The reversal of 2423142021 is 1202413242.

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 2423142021 - 2² = 2423142017 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 (2423142041) 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, 403857001 + ... + 403857006.

It is an arithmetic number, because the mean of its divisors is an integer number (807714008).

Almost surely, 2^2423142021 is an apocalyptic number.

It is an amenable number.

2423142021 is a deficient number, since it is larger than the sum of its proper divisors (807714011).

2423142021 is an equidigital number, since it uses as much as digits as its factorization.

2423142021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807714010.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2423142021 is about 49225.4204756039. The cubic root of 2423142021 is about 1343.1554841683.

Adding to 2423142021 its reverse (1202413242), we get a palindrome (3625555263).

The spelling of 2423142021 in words is "two billion, four hundred twenty-three million, one hundred forty-two thousand, twenty-one".