102142992 has 40 divisors (see below), whose sum is σ = 301566016. Its totient is φ = 29183616.

The previous prime is 102142979. The next prime is 102143003. The reversal of 102142992 is 299241201.

It is a happy 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, 151663 + ... + 152334.

Almost surely, 2^102142992 is an apocalyptic number.

102142992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102142992 is an abundant number, since it is smaller than the sum of its proper divisors (199423024).

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

102142992 is a wasteful number, since it uses less digits than its factorization.

102142992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304015 (or 304009 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 102142992 is about 10106.5816179359. The cubic root of 102142992 is about 467.4511060612.

The spelling of 102142992 in words is "one hundred two million, one hundred forty-two thousand, nine hundred ninety-two".