23742743 has 4 divisors (see below), whose sum is σ = 23888568. Its totient is φ = 23596920.

The previous prime is 23742737. The next prime is 23742773. The reversal of 23742743 is 34724732.

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

It is a cyclic number.

It is not a de Polignac number, because 23742743 - 2⁶ = 23742679 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 (23742773) 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, 72668 + ... + 72993.

It is an arithmetic number, because the mean of its divisors is an integer number (5972142).

Almost surely, 2^23742743 is an apocalyptic number.

23742743 is a deficient number, since it is larger than the sum of its proper divisors (145825).

23742743 is a wasteful number, since it uses less digits than its factorization.

23742743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145824.

The product of its digits is 28224, while the sum is 32.

The square root of 23742743 is about 4872.6525630297. The cubic root of 23742743 is about 287.4155739500.

The spelling of 23742743 in words is "twenty-three million, seven hundred forty-two thousand, seven hundred forty-three".