42137191 has 8 divisors (see below), whose sum is σ = 43800624. Its totient is φ = 40501440.

The previous prime is 42137189. The next prime is 42137201. The reversal of 42137191 is 19173124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42137191 - 2¹ = 42137189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42137131) 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, 3790 + ... + 9931.

It is an arithmetic number, because the mean of its divisors is an integer number (5475078).

Almost surely, 2^42137191 is an apocalyptic number.

42137191 is a deficient number, since it is larger than the sum of its proper divisors (1663433).

42137191 is a wasteful number, since it uses less digits than its factorization.

42137191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13841.

The product of its digits is 1512, while the sum is 28.

The square root of 42137191 is about 6491.3165844842. The cubic root of 42137191 is about 347.9807289941.

The spelling of 42137191 in words is "forty-two million, one hundred thirty-seven thousand, one hundred ninety-one".