23122142 has 16 divisors (see below), whose sum is σ = 36945072. Its totient is φ = 10815360.

The previous prime is 23122139. The next prime is 23122147. The reversal of 23122142 is 24122132.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 23122142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23122147) 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, 3917 + ... + 7847.

It is an arithmetic number, because the mean of its divisors is an integer number (2309067).

Almost surely, 2^23122142 is an apocalyptic number.

23122142 is a deficient number, since it is larger than the sum of its proper divisors (13822930).

23122142 is a wasteful number, since it uses less digits than its factorization.

23122142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4123.

The product of its digits is 192, while the sum is 17.

The square root of 23122142 is about 4808.5488455458. The cubic root of 23122142 is about 284.8892233888.

Adding to 23122142 its reverse (24122132), we get a palindrome (47244274).

The spelling of 23122142 in words is "twenty-three million, one hundred twenty-two thousand, one hundred forty-two".