113242143 has 16 divisors (see below), whose sum is σ = 172816640. Its totient is φ = 64613376.

The previous prime is 113242141. The next prime is 113242153. The reversal of 113242143 is 341242311.

It is not a de Polignac number, because 113242143 - 2¹ = 113242141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113242141) 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, 11871 + ... + 19167.

It is an arithmetic number, because the mean of its divisors is an integer number (10801040).

Almost surely, 2^113242143 is an apocalyptic number.

113242143 is a deficient number, since it is larger than the sum of its proper divisors (59574497).

113242143 is an equidigital number, since it uses as much as digits as its factorization.

113242143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8046.

The product of its digits is 576, while the sum is 21.

The square root of 113242143 is about 10641.5291664309. The cubic root of 113242143 is about 483.8038942685.

Adding to 113242143 its reverse (341242311), we get a palindrome (454484454).

The spelling of 113242143 in words is "one hundred thirteen million, two hundred forty-two thousand, one hundred forty-three".