166701442 has 8 divisors (see below), whose sum is σ = 252265356. Its totient is φ = 82612992.

The previous prime is 166701419. The next prime is 166701443. The reversal of 166701442 is 244107661.

It can be written as a sum of positive squares in 2 ways, for example, as 164326761 + 2374681 = 12819^2 + 1541^2 .

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

It is not an unprimeable number, because it can be changed into a prime (166701443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368583 + ... + 369034.

Almost surely, 2^166701442 is an apocalyptic number.

166701442 is a deficient number, since it is larger than the sum of its proper divisors (85563914).

166701442 is a wasteful number, since it uses less digits than its factorization.

166701442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737732.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 166701442 is about 12911.2912599786. The cubic root of 166701442 is about 550.3594806943.

The spelling of 166701442 in words is "one hundred sixty-six million, seven hundred one thousand, four hundred forty-two".