42257395 has 8 divisors (see below), whose sum is σ = 50829120. Its totient is φ = 33725760.

The previous prime is 42257389. The next prime is 42257399. The reversal of 42257395 is 59375224.

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

It is not a de Polignac number, because 42257395 - 2²³ = 33868787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42257399) 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, 7650 + ... + 11959.

It is an arithmetic number, because the mean of its divisors is an integer number (6353640).

Almost surely, 2^42257395 is an apocalyptic number.

42257395 is a deficient number, since it is larger than the sum of its proper divisors (8571725).

42257395 is a wasteful number, since it uses less digits than its factorization.

42257395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20045.

The product of its digits is 75600, while the sum is 37.

The square root of 42257395 is about 6500.5688212648. The cubic root of 42257395 is about 348.3113076178.

The spelling of 42257395 in words is "forty-two million, two hundred fifty-seven thousand, three hundred ninety-five".