143642994 has 16 divisors (see below), whose sum is σ = 313403040. Its totient is φ = 43528160.

The previous prime is 143642977. The next prime is 143643029. The reversal of 143642994 is 499246341.

143642994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1088139 + ... + 1088270.

It is an arithmetic number, because the mean of its divisors is an integer number (19587690).

Almost surely, 2^143642994 is an apocalyptic number.

143642994 is an abundant number, since it is smaller than the sum of its proper divisors (169760046).

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

143642994 is a wasteful number, since it uses less digits than its factorization.

143642994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2176425.

The product of its digits is 186624, while the sum is 42.

The square root of 143642994 is about 11985.1155188425. The cubic root of 143642994 is about 523.7147627917.

The spelling of 143642994 in words is "one hundred forty-three million, six hundred forty-two thousand, nine hundred ninety-four".