42138119 has 4 divisors (see below), whose sum is σ = 43165920. Its totient is φ = 41110320.

The previous prime is 42138113. The next prime is 42138133. The reversal of 42138119 is 91183124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42138119 is a prime.

It is a super-2 number, since 2×42138119² = 3551242145716322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42138091 and 42138100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42138113) 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, 513839 + ... + 513920.

It is an arithmetic number, because the mean of its divisors is an integer number (10791480).

Almost surely, 2^42138119 is an apocalyptic number.

42138119 is a deficient number, since it is larger than the sum of its proper divisors (1027801).

42138119 is a wasteful number, since it uses less digits than its factorization.

42138119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027800.

The product of its digits is 1728, while the sum is 29.

The square root of 42138119 is about 6491.3880641971. The cubic root of 42138119 is about 347.9832835367.

The spelling of 42138119 in words is "forty-two million, one hundred thirty-eight thousand, one hundred nineteen".