166042415 has 64 divisors (see below), whose sum is σ = 259918848. Its totient is φ = 98841600.

The previous prime is 166042391. The next prime is 166042423. The reversal of 166042415 is 514240661.

It is not a de Polignac number, because 166042415 - 2⁶ = 166042351 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1057517 + ... + 1057673.

It is an arithmetic number, because the mean of its divisors is an integer number (4061232).

Almost surely, 2^166042415 is an apocalyptic number.

166042415 is a deficient number, since it is larger than the sum of its proper divisors (93876433).

166042415 is a wasteful number, since it uses less digits than its factorization.

166042415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 166042415 is about 12885.7446428214. The cubic root of 166042415 is about 549.6332706779.

The spelling of 166042415 in words is "one hundred sixty-six million, forty-two thousand, four hundred fifteen".