140243542 has 16 divisors (see below), whose sum is σ = 218045520. Its totient is φ = 67596768.

The previous prime is 140243497. The next prime is 140243549. The reversal of 140243542 is 245342041.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140243549) 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, 628 + ... + 16759.

It is an arithmetic number, because the mean of its divisors is an integer number (13627845).

Almost surely, 2^140243542 is an apocalyptic number.

140243542 is a deficient number, since it is larger than the sum of its proper divisors (77801978).

140243542 is a wasteful number, since it uses less digits than its factorization.

140243542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17535.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 140243542 is about 11842.4466222145. The cubic root of 140243542 is about 519.5503287134.

Adding to 140243542 its reverse (245342041), we get a palindrome (385585583).

It can be divided in two parts, 1402 and 43542, that added together give a palindrome (44944).

The spelling of 140243542 in words is "one hundred forty million, two hundred forty-three thousand, five hundred forty-two".