23142033421 has 24 divisors (see below), whose sum is σ = 26404967520. Its totient is φ = 20216903616.

The previous prime is 23142033407. The next prime is 23142033449. The reversal of 23142033421 is 12433024132.

It is not a de Polignac number, because 23142033421 - 2¹⁵ = 23142000653 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 (23142033401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3731295 + ... + 3737491.

It is an arithmetic number, because the mean of its divisors is an integer number (1100206980).

Almost surely, 2^23142033421 is an apocalyptic number.

It is an amenable number.

23142033421 is a deficient number, since it is larger than the sum of its proper divisors (3262934099).

23142033421 is a wasteful number, since it uses less digits than its factorization.

23142033421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7405 (or 7392 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 23142033421 its reverse (12433024132), we get a palindrome (35575057553).

The spelling of 23142033421 in words is "twenty-three billion, one hundred forty-two million, thirty-three thousand, four hundred twenty-one".