102042012 has 12 divisors (see below), whose sum is σ = 238098056. Its totient is φ = 34014000.

The previous prime is 102042011. The next prime is 102042019. The reversal of 102042012 is 210240201.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 8503501 = 102042012 / (1 + 0 + 2 + 0 + 4 + 2 + 0 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102042011) 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 3 ways as a sum of consecutive naturals, for example, 4251739 + ... + 4251762.

Almost surely, 2^102042012 is an apocalyptic number.

102042012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102042012 is an abundant number, since it is smaller than the sum of its proper divisors (136056044).

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

102042012 is a wasteful number, since it uses less digits than its factorization.

102042012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8503508 (or 8503506 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 102042012 is about 10101.5846281660. The cubic root of 102042012 is about 467.2970123554.

Adding to 102042012 its reverse (210240201), we get a palindrome (312282213).

The spelling of 102042012 in words is "one hundred two million, forty-two thousand, twelve".