140404042 has 8 divisors (see below), whose sum is σ = 211604832. Its totient is φ = 69869100.

The previous prime is 140404021. The next prime is 140404079. The reversal of 140404042 is 240404041.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165934 + ... + 166777.

It is an arithmetic number, because the mean of its divisors is an integer number (26450604).

Almost surely, 2^140404042 is an apocalyptic number.

140404042 is a deficient number, since it is larger than the sum of its proper divisors (71200790).

140404042 is a wasteful number, since it uses less digits than its factorization.

140404042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332924.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 140404042 is about 11849.2211558397. The cubic root of 140404042 is about 519.7484508183.

Adding to 140404042 its reverse (240404041), we get a palindrome (380808083).

Subtracting 140404042 from its reverse (240404041), we obtain a palindrome (99999999).

The spelling of 140404042 in words is "one hundred forty million, four hundred four thousand, forty-two".