660142 has 16 divisors (see below), whose sum is σ = 1151712. Its totient is φ = 277920.

The previous prime is 660137. The next prime is 660157. The reversal of 660142 is 241066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 468 + ... + 1240.

It is an arithmetic number, because the mean of its divisors is an integer number (71982).

2⁶⁶⁰¹⁴² is an apocalyptic number.

660142 is a deficient number, since it is larger than the sum of its proper divisors (491570).

660142 is a wasteful number, since it uses less digits than its factorization.

660142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 660142 is about 812.4912307219. The cubic root of 660142 is about 87.0721205824.

The spelling of 660142 in words is "six hundred sixty thousand, one hundred forty-two".