140042442 has 8 divisors (see below), whose sum is σ = 280084896. Its totient is φ = 46680812.

The previous prime is 140042411. The next prime is 140042453. The reversal of 140042442 is 244240041.

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

140042442 is an admirable number.

It is a super-2 number, since 2×140042442² = 39223771122646728, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 11670198 + ... + 11670209.

It is an arithmetic number, because the mean of its divisors is an integer number (35010612).

Almost surely, 2^140042442 is an apocalyptic number.

140042442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

140042442 is a wasteful number, since it uses less digits than its factorization.

140042442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23340412.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 140042442 is about 11833.9529321356. The cubic root of 140042442 is about 519.3018762729.

Adding to 140042442 its reverse (244240041), we get a palindrome (384282483).

The spelling of 140042442 in words is "one hundred forty million, forty-two thousand, four hundred forty-two".