42189371 has 4 divisors (see below), whose sum is σ = 48216432. Its totient is φ = 36162312.

The previous prime is 42189349. The next prime is 42189379. The reversal of 42189371 is 17398124.

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

It is a cyclic number.

It is not a de Polignac number, because 42189371 - 2¹⁰ = 42188347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42189379) 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, 3013520 + ... + 3013533.

It is an arithmetic number, because the mean of its divisors is an integer number (12054108).

Almost surely, 2^42189371 is an apocalyptic number.

42189371 is a deficient number, since it is larger than the sum of its proper divisors (6027061).

42189371 is an equidigital number, since it uses as much as digits as its factorization.

42189371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6027060.

The product of its digits is 12096, while the sum is 35.

The square root of 42189371 is about 6495.3345564336. The cubic root of 42189371 is about 348.1243087635.

The spelling of 42189371 in words is "forty-two million, one hundred eighty-nine thousand, three hundred seventy-one".