23121342 has 16 divisors (see below), whose sum is σ = 51380880. Its totient is φ = 7707096.

The previous prime is 23121341. The next prime is 23121349. The reversal of 23121342 is 24312132.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23121341) 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, 214033 + ... + 214140.

It is an arithmetic number, because the mean of its divisors is an integer number (3211305).

Almost surely, 2^23121342 is an apocalyptic number.

23121342 is an abundant number, since it is smaller than the sum of its proper divisors (28259538).

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

23121342 is a wasteful number, since it uses less digits than its factorization.

23121342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428184 (or 428178 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 23121342 is about 4808.4656596465. The cubic root of 23121342 is about 284.8859377358.

Adding to 23121342 its reverse (24312132), we get a palindrome (47433474).

The spelling of 23121342 in words is "twenty-three million, one hundred twenty-one thousand, three hundred forty-two".