142187905440 has 240 divisors, whose sum is σ = 573491584512. Its totient is φ = 32500071936.

The previous prime is 142187905423. The next prime is 142187905513. The reversal of 142187905440 is 44509781241.

142187905440 is a `hidden beast` number, since 1 + 4 + 2 + 18 + 7 + 90 + 544 + 0 = 666.

142187905440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 692944 + ... + 874383.

Almost surely, 2^142187905440 is an apocalyptic number.

142187905440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142187905440 is an abundant number, since it is smaller than the sum of its proper divisors (431303679072).

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

142187905440 is a wasteful number, since it uses less digits than its factorization.

142187905440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567361 (or 1567344 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 142187905440 in words is "one hundred forty-two billion, one hundred eighty-seven million, nine hundred five thousand, four hundred forty".