21070142192 has 20 divisors (see below), whose sum is σ = 44534619096. Its totient is φ = 9577337280.

The previous prime is 21070142179. The next prime is 21070142231. The reversal of 21070142192 is 29124107012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59858183 + ... + 59858534.

Almost surely, 2^21070142192 is an apocalyptic number.

21070142192 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21070142192 is an abundant number, since it is smaller than the sum of its proper divisors (23464476904).

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

21070142192 is a wasteful number, since it uses less digits than its factorization.

21070142192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119716736 (or 119716730 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The spelling of 21070142192 in words is "twenty-one billion, seventy million, one hundred forty-two thousand, one hundred ninety-two".