1000447121142 has 48 divisors (see below), whose sum is σ = 2485752665760. Its totient is φ = 284866454016.

The previous prime is 1000447121123. The next prime is 1000447121173. The reversal of 1000447121142 is 2411217440001.

It is a happy number.

1000447121142 is a `hidden beast` number, since 1 + 0 + 0 + 0 + 447 + 1 + 211 + 4 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13512667 + ... + 13586502.

It is an arithmetic number, because the mean of its divisors is an integer number (51786513870).

Almost surely, 2^{1000447121142} is an apocalyptic number.

1000447121142 is an abundant number, since it is smaller than the sum of its proper divisors (1485305544618).

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

1000447121142 is a wasteful number, since it uses less digits than its factorization.

1000447121142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27099477 (or 27099474 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The spelling of 1000447121142 in words is "one trillion, four hundred forty-seven million, one hundred twenty-one thousand, one hundred forty-two".