665190142 has 8 divisors (see below), whose sum is σ = 998163000. Its totient is φ = 332469144.

The previous prime is 665190083. The next prime is 665190143. The reversal of 665190142 is 241091566.

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

It is a junction number, because it is equal to n+sod(n) for n = 665190098 and 665190107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665190143) 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, 56217 + ... + 67012.

It is an arithmetic number, because the mean of its divisors is an integer number (124770375).

Almost surely, 2^665190142 is an apocalyptic number.

665190142 is a deficient number, since it is larger than the sum of its proper divisors (332972858).

665190142 is a wasteful number, since it uses less digits than its factorization.

665190142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125930.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 665190142 is about 25791.2803482107. The cubic root of 665190142 is about 872.9350564687.

The spelling of 665190142 in words is "six hundred sixty-five million, one hundred ninety thousand, one hundred forty-two".