2123424342 has 32 divisors (see below), whose sum is σ = 5081700960. Its totient is φ = 653361120.

The previous prime is 2123424311. The next prime is 2123424349. The reversal of 2123424342 is 2434243212.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123424349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1511709 + ... + 1513112.

It is an arithmetic number, because the mean of its divisors is an integer number (158803155).

Almost surely, 2^2123424342 is an apocalyptic number.

2123424342 is an abundant number, since it is smaller than the sum of its proper divisors (2958276618).

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

2123424342 is a wasteful number, since it uses less digits than its factorization.

2123424342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3024845 (or 3024839 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 2123424342 is about 46080.6287066485. The cubic root of 2123424342 is about 1285.3229551575.

Adding to 2123424342 its reverse (2434243212), we get a palindrome (4557667554).

The spelling of 2123424342 in words is "two billion, one hundred twenty-three million, four hundred twenty-four thousand, three hundred forty-two".