166120142 has 12 divisors (see below), whose sum is σ = 251523216. Its totient is φ = 82286280.

The previous prime is 166120139. The next prime is 166120169. The reversal of 166120142 is 241021661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20267 + ... + 27257.

It is an arithmetic number, because the mean of its divisors is an integer number (20960268).

Almost surely, 2^166120142 is an apocalyptic number.

166120142 is a deficient number, since it is larger than the sum of its proper divisors (85403074).

166120142 is an equidigital number, since it uses as much as digits as its factorization.

166120142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7211 (or 7102 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 166120142 is about 12888.7602972512. The cubic root of 166120142 is about 549.7190212190.

The spelling of 166120142 in words is "one hundred sixty-six million, one hundred twenty thousand, one hundred forty-two".