140442535 has 4 divisors (see below), whose sum is σ = 168531048. Its totient is φ = 112354024.

The previous prime is 140442469. The next prime is 140442539. The reversal of 140442535 is 535244041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 535244041 = 19 ⋅28170739.

It is a cyclic number.

It is not a de Polignac number, because 140442535 - 2²³ = 132053927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140442539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14044249 + ... + 14044258.

It is an arithmetic number, because the mean of its divisors is an integer number (42132762).

Almost surely, 2^140442535 is an apocalyptic number.

140442535 is a deficient number, since it is larger than the sum of its proper divisors (28088513).

140442535 is an equidigital number, since it uses as much as digits as its factorization.

140442535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28088512.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 140442535 is about 11850.8453284987. The cubic root of 140442535 is about 519.7959443443.

Adding to 140442535 its reverse (535244041), we get a palindrome (675686576).

The spelling of 140442535 in words is "one hundred forty million, four hundred forty-two thousand, five hundred thirty-five".