23729542 has 4 divisors (see below), whose sum is σ = 35594316. Its totient is φ = 11864770.

The previous prime is 23729513. The next prime is 23729561. The reversal of 23729542 is 24592732.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 23729498 and 23729507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5932384 + ... + 5932387.

It is an arithmetic number, because the mean of its divisors is an integer number (8898579).

Almost surely, 2^23729542 is an apocalyptic number.

23729542 is a deficient number, since it is larger than the sum of its proper divisors (11864774).

23729542 is a wasteful number, since it uses less digits than its factorization.

23729542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11864773.

The product of its digits is 30240, while the sum is 34.

The square root of 23729542 is about 4871.2977736944. The cubic root of 23729542 is about 287.3622962474.

The spelling of 23729542 in words is "twenty-three million, seven hundred twenty-nine thousand, five hundred forty-two".