140042346 has 16 divisors (see below), whose sum is σ = 281553408. Its totient is φ = 46436000.

The previous prime is 140042339. The next prime is 140042381. The reversal of 140042346 is 643240041.

It is a super-2 number, since 2×140042346² = 39223717346367432, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 59955 + ... + 62246.

It is an arithmetic number, because the mean of its divisors is an integer number (17597088).

Almost surely, 2^140042346 is an apocalyptic number.

140042346 is an abundant number, since it is smaller than the sum of its proper divisors (141511062).

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

140042346 is a wasteful number, since it uses less digits than its factorization.

140042346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122397.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 140042346 is about 11833.9488760092. The cubic root of 140042346 is about 519.3017576112.

Adding to 140042346 its reverse (643240041), we get a palindrome (783282387).

The spelling of 140042346 in words is "one hundred forty million, forty-two thousand, three hundred forty-six".