140543442 has 72 divisors (see below), whose sum is σ = 337094784. Its totient is φ = 42280992.

The previous prime is 140543413. The next prime is 140543453. The reversal of 140543442 is 244345041.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 142483 + ... + 143465.

It is an arithmetic number, because the mean of its divisors is an integer number (4681872).

Almost surely, 2^140543442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140543442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168547392).

140543442 is an abundant number, since it is smaller than the sum of its proper divisors (196551342).

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

140543442 is a wasteful number, since it uses less digits than its factorization.

140543442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064 (or 1048 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 140543442 is about 11855.1019396714. The cubic root of 140543442 is about 519.9204044837.

Adding to 140543442 its reverse (244345041), we get a palindrome (384888483).

The spelling of 140543442 in words is "one hundred forty million, five hundred forty-three thousand, four hundred forty-two".