140144442 has 16 divisors (see below), whose sum is σ = 280405152. Its totient is φ = 46695440.

The previous prime is 140144429. The next prime is 140144449. The reversal of 140144442 is 244441041.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (140144449) 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, 24517 + ... + 29687.

It is an arithmetic number, because the mean of its divisors is an integer number (17525322).

Almost surely, 2^140144442 is an apocalyptic number.

140144442 is an abundant number, since it is smaller than the sum of its proper divisors (140260710).

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

140144442 is a wasteful number, since it uses less digits than its factorization.

140144442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9693.

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 140144442 is about 11838.2617811907. The cubic root of 140144442 is about 519.4279236241.

Adding to 140144442 its reverse (244441041), we get a palindrome (384585483).

The spelling of 140144442 in words is "one hundred forty million, one hundred forty-four thousand, four hundred forty-two".