101142012 has 12 divisors (see below), whose sum is σ = 235998056. Its totient is φ = 33714000.

The previous prime is 101142007. The next prime is 101142023. The reversal of 101142012 is 210241101.

It is a happy number.

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: 8428501 = 101142012 / (1 + 0 + 1 + 1 + 4 + 2 + 0 + 1 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4214239 + ... + 4214262.

Almost surely, 2^101142012 is an apocalyptic number.

101142012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101142012 is an abundant number, since it is smaller than the sum of its proper divisors (134856044).

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

101142012 is a wasteful number, since it uses less digits than its factorization.

101142012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8428508 (or 8428506 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 101142012 is about 10056.9385003588. The cubic root of 101142012 is about 465.9191162952.

Adding to 101142012 its reverse (210241101), we get a palindrome (311383113).

The spelling of 101142012 in words is "one hundred one million, one hundred forty-two thousand, twelve".