23421212142 has 16 divisors (see below), whose sum is σ = 47048781312. Its totient is φ = 7772677880.

The previous prime is 23421212141. The next prime is 23421212159. The reversal of 23421212142 is 24121212432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23421212141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8596734 + ... + 8599457.

It is an arithmetic number, because the mean of its divisors is an integer number (2940548832).

Almost surely, 2^23421212142 is an apocalyptic number.

23421212142 is an abundant number, since it is smaller than the sum of its proper divisors (23627569170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23421212142 is a wasteful number, since it uses less digits than its factorization.

23421212142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17196423.

The product of its digits is 1536, while the sum is 24.

Adding to 23421212142 its reverse (24121212432), we get a palindrome (47542424574).

The spelling of 23421212142 in words is "twenty-three billion, four hundred twenty-one million, two hundred twelve thousand, one hundred forty-two".