42143113 has 4 divisors (see below), whose sum is σ = 42156288. Its totient is φ = 42129940.

The previous prime is 42143089. The next prime is 42143141. The reversal of 42143113 is 31134124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42143113 - 2⁵ = 42143081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42143183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1620 + ... + 9322.

It is an arithmetic number, because the mean of its divisors is an integer number (10539072).

Almost surely, 2^42143113 is an apocalyptic number.

It is an amenable number.

42143113 is a deficient number, since it is larger than the sum of its proper divisors (13175).

42143113 is an equidigital number, since it uses as much as digits as its factorization.

42143113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13174.

The product of its digits is 288, while the sum is 19.

The square root of 42143113 is about 6491.7727162925. The cubic root of 42143113 is about 347.9970300755.

Adding to 42143113 its reverse (31134124), we get a palindrome (73277237).

It can be divided in two parts, 421 and 43113, that added together give a palindrome (43534).

The spelling of 42143113 in words is "forty-two million, one hundred forty-three thousand, one hundred thirteen".