140305442 has 16 divisors (see below), whose sum is σ = 217865472. Its totient is φ = 67696560.

The previous prime is 140305427. The next prime is 140305493. The reversal of 140305442 is 244503041.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20093 + ... + 26159.

It is an arithmetic number, because the mean of its divisors is an integer number (13616592).

Almost surely, 2^140305442 is an apocalyptic number.

140305442 is a deficient number, since it is larger than the sum of its proper divisors (77560030).

140305442 is a wasteful number, since it uses less digits than its factorization.

140305442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6473.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 140305442 is about 11845.0598141166. The cubic root of 140305442 is about 519.6267563204.

Adding to 140305442 its reverse (244503041), we get a palindrome (384808483).

The spelling of 140305442 in words is "one hundred forty million, three hundred five thousand, four hundred forty-two".