23729990242 has 16 divisors (see below), whose sum is σ = 40774378752. Its totient is φ = 10146396960.

The previous prime is 23729990237. The next prime is 23729990287. The reversal of 23729990242 is 24209992732.

It is a super-2 number, since 2×23729990242² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1960323 + ... + 1972390.

It is an arithmetic number, because the mean of its divisors is an integer number (2548398672).

Almost surely, 2^23729990242 is an apocalyptic number.

23729990242 is a deficient number, since it is larger than the sum of its proper divisors (17044388510).

23729990242 is a wasteful number, since it uses less digits than its factorization.

23729990242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3933153.

The product of its (nonzero) digits is 979776, while the sum is 49.

The spelling of 23729990242 in words is "twenty-three billion, seven hundred twenty-nine million, nine hundred ninety thousand, two hundred forty-two".