42187475 has 12 divisors (see below), whose sum is σ = 57068520. Its totient is φ = 30681600.

The previous prime is 42187463. The next prime is 42187477. The reversal of 42187475 is 57478124.

It is not a de Polignac number, because 42187475 - 2⁴ = 42187459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42187477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76430 + ... + 76979.

It is an arithmetic number, because the mean of its divisors is an integer number (4755710).

Almost surely, 2^42187475 is an apocalyptic number.

42187475 is a deficient number, since it is larger than the sum of its proper divisors (14881045).

42187475 is a wasteful number, since it uses less digits than its factorization.

42187475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153430 (or 153425 counting only the distinct ones).

The product of its digits is 62720, while the sum is 38.

The square root of 42187475 is about 6495.1886038821. The cubic root of 42187475 is about 348.1190937567.

The spelling of 42187475 in words is "forty-two million, one hundred eighty-seven thousand, four hundred seventy-five".