2042645743 has 4 divisors (see below), whose sum is σ = 2060722368. Its totient is φ = 2024569120.

The previous prime is 2042645719. The next prime is 2042645767. The reversal of 2042645743 is 3475462402.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2042645719) and next prime (2042645767).

It is a cyclic number.

It is not a de Polignac number, because 2042645743 - 2²⁵ = 2009091311 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 (2042648743) 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, 9038143 + ... + 9038368.

It is an arithmetic number, because the mean of its divisors is an integer number (515180592).

Almost surely, 2^2042645743 is an apocalyptic number.

2042645743 is a deficient number, since it is larger than the sum of its proper divisors (18076625).

2042645743 is a wasteful number, since it uses less digits than its factorization.

2042645743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18076624.

The product of its (nonzero) digits is 161280, while the sum is 37.

The square root of 2042645743 is about 45195.6385395759. The cubic root of 2042645743 is about 1268.8131891232.

The spelling of 2042645743 in words is "two billion, forty-two million, six hundred forty-five thousand, seven hundred forty-three".