142894561005 has 96 divisors (see below), whose sum is σ = 286944413184. Its totient is φ = 64433553408.

The previous prime is 142894561003. The next prime is 142894561057. The reversal of 142894561005 is 500165498241.

142894561005 is a `hidden beast` number, since 1 + 4 + 2 + 89 + 4 + 561 + 0 + 0 + 5 = 666.

It is not a de Polignac number, because 142894561005 - 2¹ = 142894561003 is a prime.

It is a super-2 number, since 2×142894561005² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142894561003) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8329797 + ... + 8346933.

It is an arithmetic number, because the mean of its divisors is an integer number (2989004304).

Almost surely, 2^142894561005 is an apocalyptic number.

142894561005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142894561005 is an abundant number, since it is smaller than the sum of its proper divisors (144049852179).

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

142894561005 is a wasteful number, since it uses less digits than its factorization.

142894561005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17515 (or 17512 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 142894561005 in words is "one hundred forty-two billion, eight hundred ninety-four million, five hundred sixty-one thousand, five".