42270187 has 8 divisors (see below), whose sum is σ = 42681600. Its totient is φ = 41861160.

The previous prime is 42270181. The next prime is 42270199. The reversal of 42270187 is 78107224.

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

It is a cyclic number.

It is not a de Polignac number, because 42270187 - 2¹¹ = 42268139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42270181) 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, 61548 + ... + 62230.

It is an arithmetic number, because the mean of its divisors is an integer number (5335200).

Almost surely, 2^42270187 is an apocalyptic number.

42270187 is a deficient number, since it is larger than the sum of its proper divisors (411413).

42270187 is a wasteful number, since it uses less digits than its factorization.

42270187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 42270187 is about 6501.5526607111. The cubic root of 42270187 is about 348.3464505692.

The spelling of 42270187 in words is "forty-two million, two hundred seventy thousand, one hundred eighty-seven".