42157395 has 48 divisors (see below), whose sum is σ = 87196320. Its totient is φ = 19268928.

The previous prime is 42157391. The next prime is 42157397. The reversal of 42157395 is 59375124.

It is not a de Polignac number, because 42157395 - 2² = 42157391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42157391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3429 + ... + 9801.

It is an arithmetic number, because the mean of its divisors is an integer number (1816590).

Almost surely, 2^42157395 is an apocalyptic number.

42157395 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42157395 is an abundant number, since it is smaller than the sum of its proper divisors (45038925).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42157395 is a wasteful number, since it uses less digits than its factorization.

42157395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6401 (or 6388 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 42157395 is about 6492.8726308160. The cubic root of 42157395 is about 348.0363368716.

The spelling of 42157395 in words is "forty-two million, one hundred fifty-seven thousand, three hundred ninety-five".