42167215 has 4 divisors (see below), whose sum is σ = 50600664. Its totient is φ = 33733768.

The previous prime is 42167207. The next prime is 42167231. The reversal of 42167215 is 51276124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42167215 - 2³ = 42167207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4216717 + ... + 4216726.

It is an arithmetic number, because the mean of its divisors is an integer number (12650166).

Almost surely, 2^42167215 is an apocalyptic number.

42167215 is a deficient number, since it is larger than the sum of its proper divisors (8433449).

42167215 is an equidigital number, since it uses as much as digits as its factorization.

42167215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8433448.

The product of its digits is 3360, while the sum is 28.

The square root of 42167215 is about 6493.6288006014. The cubic root of 42167215 is about 348.0633582399.

The spelling of 42167215 in words is "forty-two million, one hundred sixty-seven thousand, two hundred fifteen".