140544242 has 8 divisors (see below), whose sum is σ = 210915036. Its totient is φ = 70239232.

The previous prime is 140544233. The next prime is 140544247. The reversal of 140544242 is 242445041.

It can be written as a sum of positive squares in 2 ways, for example, as 139736041 + 808201 = 11821^2 + 899^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (140544247) 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, 10703 + ... + 19890.

Almost surely, 2^140544242 is an apocalyptic number.

140544242 is a deficient number, since it is larger than the sum of its proper divisors (70370794).

140544242 is a wasteful number, since it uses less digits than its factorization.

140544242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32892.

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 140544242 is about 11855.1356803708. The cubic root of 140544242 is about 519.9213909771.

Adding to 140544242 its reverse (242445041), we get a palindrome (382989283).

The spelling of 140544242 in words is "one hundred forty million, five hundred forty-four thousand, two hundred forty-two".