166242801 has 8 divisors (see below), whose sum is σ = 228807424. Its totient is φ = 107253360.

The previous prime is 166242757. The next prime is 166242829. The reversal of 166242801 is 108242661.

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

It is not a de Polignac number, because 166242801 - 2¹³ = 166234609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166242301) 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, 893686 + ... + 893871.

It is an arithmetic number, because the mean of its divisors is an integer number (28600928).

Almost surely, 2^166242801 is an apocalyptic number.

It is an amenable number.

166242801 is a deficient number, since it is larger than the sum of its proper divisors (62564623).

166242801 is a wasteful number, since it uses less digits than its factorization.

166242801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1787591.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 166242801 is about 12893.5177899594. The cubic root of 166242801 is about 549.8542875704.

The spelling of 166242801 in words is "one hundred sixty-six million, two hundred forty-two thousand, eight hundred one".