143638242 has 16 divisors (see below), whose sum is σ = 313392672. Its totient is φ = 43526720.

The previous prime is 143638241. The next prime is 143638249. The reversal of 143638242 is 242836341.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (143638241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1088103 + ... + 1088234.

It is an arithmetic number, because the mean of its divisors is an integer number (19587042).

Almost surely, 2^143638242 is an apocalyptic number.

143638242 is an abundant number, since it is smaller than the sum of its proper divisors (169754430).

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

143638242 is a wasteful number, since it uses less digits than its factorization.

143638242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2176353.

The product of its digits is 27648, while the sum is 33.

The square root of 143638242 is about 11984.9172713040. The cubic root of 143638242 is about 523.7089875477.

The spelling of 143638242 in words is "one hundred forty-three million, six hundred thirty-eight thousand, two hundred forty-two".