166042424 has 8 divisors (see below), whose sum is σ = 311329560. Its totient is φ = 83021208.

The previous prime is 166042423. The next prime is 166042439. The reversal of 166042424 is 424240661.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166042423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10377644 + ... + 10377659.

It is an arithmetic number, because the mean of its divisors is an integer number (38916195).

Almost surely, 2^166042424 is an apocalyptic number.

It is an amenable number.

166042424 is a deficient number, since it is larger than the sum of its proper divisors (145287136).

166042424 is a wasteful number, since it uses less digits than its factorization.

166042424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20755309 (or 20755305 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 166042424 is about 12885.7449920445. The cubic root of 166042424 is about 549.6332806085.

The spelling of 166042424 in words is "one hundred sixty-six million, forty-two thousand, four hundred twenty-four".