42166015 has 16 divisors (see below), whose sum is σ = 54033408. Its totient is φ = 31512096.

The previous prime is 42166009. The next prime is 42166031. The reversal of 42166015 is 51066124.

It is a cyclic number.

It is not a de Polignac number, because 42166015 - 2¹¹ = 42163967 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 15 ways as a sum of consecutive naturals, for example, 682 + ... + 9208.

It is an arithmetic number, because the mean of its divisors is an integer number (3377088).

Almost surely, 2^42166015 is an apocalyptic number.

42166015 is a deficient number, since it is larger than the sum of its proper divisors (11867393).

42166015 is a wasteful number, since it uses less digits than its factorization.

42166015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8598.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 42166015 is about 6493.5364016844. The cubic root of 42166015 is about 348.0600564647.

The spelling of 42166015 in words is "forty-two million, one hundred sixty-six thousand, fifteen".