42571919 has 8 divisors (see below), whose sum is σ = 47840352. Its totient is φ = 37588320.

The previous prime is 42571901. The next prime is 42571931. The reversal of 42571919 is 91917524.

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 42571919 - 2¹⁶ = 42506383 is a prime.

It is a super-2 number, since 2×42571919² = 3624736574685122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42571939) 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, 70892 + ... + 71489.

It is an arithmetic number, because the mean of its divisors is an integer number (5980044).

Almost surely, 2^42571919 is an apocalyptic number.

42571919 is a deficient number, since it is larger than the sum of its proper divisors (5268433).

42571919 is a wasteful number, since it uses less digits than its factorization.

42571919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142417.

The product of its digits is 22680, while the sum is 38.

The square root of 42571919 is about 6524.7160091455. The cubic root of 42571919 is about 349.1733388512.

The spelling of 42571919 in words is "forty-two million, five hundred seventy-one thousand, nine hundred nineteen".