42315897 has 8 divisors (see below), whose sum is σ = 60761344. Its totient is φ = 26040528.

The previous prime is 42315893. The next prime is 42315943. The reversal of 42315897 is 79851324.

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

It is not a de Polignac number, because 42315897 - 2² = 42315893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1085023 = 42315897 / (4 + 2 + 3 + 1 + 5 + 8 + 9 + 7).

It is a Duffinian number.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (42315893) 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, 542473 + ... + 542550.

It is an arithmetic number, because the mean of its divisors is an integer number (7595168).

Almost surely, 2^42315897 is an apocalyptic number.

It is an amenable number.

42315897 is a deficient number, since it is larger than the sum of its proper divisors (18445447).

42315897 is a wasteful number, since it uses less digits than its factorization.

42315897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085039.

The product of its digits is 60480, while the sum is 39.

The square root of 42315897 is about 6505.0670250198. The cubic root of 42315897 is about 348.4719699267.

The spelling of 42315897 in words is "forty-two million, three hundred fifteen thousand, eight hundred ninety-seven".