102142012 has 24 divisors (see below), whose sum is σ = 204538880. Its totient is φ = 43720560.

The previous prime is 102142003. The next prime is 102142013. The reversal of 102142012 is 210241201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 102141983 and 102142001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102142013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27337 + ... + 30847.

Almost surely, 2^102142012 is an apocalyptic number.

It is an amenable number.

102142012 is an abundant number, since it is smaller than the sum of its proper divisors (102396868).

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

102142012 is a wasteful number, since it uses less digits than its factorization.

102142012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4561 (or 4559 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 102142012 is about 10106.5331345620. The cubic root of 102142012 is about 467.4496110866.

Adding to 102142012 its reverse (210241201), we get a palindrome (312383213).

The spelling of 102142012 in words is "one hundred two million, one hundred forty-two thousand, twelve".