42395971 has 8 divisors (see below), whose sum is σ = 42854400. Its totient is φ = 41940360.

The previous prime is 42395959. The next prime is 42395989. The reversal of 42395971 is 17959324.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42395971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42398971) 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, 42286 + ... + 43276.

It is an arithmetic number, because the mean of its divisors is an integer number (5356800).

Almost surely, 2^42395971 is an apocalyptic number.

42395971 is a deficient number, since it is larger than the sum of its proper divisors (458429).

42395971 is a wasteful number, since it uses less digits than its factorization.

42395971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409.

The product of its digits is 68040, while the sum is 40.

The square root of 42395971 is about 6511.2188567119. The cubic root of 42395971 is about 348.6916349102.

The spelling of 42395971 in words is "forty-two million, three hundred ninety-five thousand, nine hundred seventy-one".