2042402243 has 4 divisors (see below), whose sum is σ = 2334174000. Its totient is φ = 1750630488.

The previous prime is 2042402239. The next prime is 2042402251. The reversal of 2042402243 is 3422042402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3422042402 = 2 ⋅1711021201.

It is a cyclic number.

It is not a de Polignac number, because 2042402243 - 2² = 2042402239 is a prime.

It is a super-2 number, since 2×2042402243² = 8342813844422862098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2042402213) 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, 145885868 + ... + 145885881.

It is an arithmetic number, because the mean of its divisors is an integer number (583543500).

Almost surely, 2^2042402243 is an apocalyptic number.

2042402243 is a deficient number, since it is larger than the sum of its proper divisors (291771757).

2042402243 is an equidigital number, since it uses as much as digits as its factorization.

2042402243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291771756.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 2042402243 is about 45192.9446152826. The cubic root of 2042402243 is about 1268.7627694995.

Adding to 2042402243 its reverse (3422042402), we get a palindrome (5464444645).

The spelling of 2042402243 in words is "two billion, forty-two million, four hundred two thousand, two hundred forty-three".