665150142 has 16 divisors (see below), whose sum is σ = 1340456832. Its totient is φ = 220023960.

The previous prime is 665150117. The next prime is 665150149. The reversal of 665150142 is 241051566.

It is a super-2 number, since 2×665150142² = 884849422805240328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665150149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422338 + ... + 423909.

It is an arithmetic number, because the mean of its divisors is an integer number (83778552).

Almost surely, 2^665150142 is an apocalyptic number.

665150142 is an abundant number, since it is smaller than the sum of its proper divisors (675306690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

665150142 is a wasteful number, since it uses less digits than its factorization.

665150142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846383.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 665150142 is about 25790.5048806727. The cubic root of 665150142 is about 872.9175586637.

The spelling of 665150142 in words is "six hundred sixty-five million, one hundred fifty thousand, one hundred forty-two".