140342142 has 32 divisors (see below), whose sum is σ = 285184800. Its totient is φ = 46035968.

The previous prime is 140342131. The next prime is 140342161. The reversal of 140342142 is 241243041.

It is a super-2 number, since 2×140342142² = 39391833642296328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143158 + ... + 144134.

It is an arithmetic number, because the mean of its divisors is an integer number (8912025).

Almost surely, 2^140342142 is an apocalyptic number.

140342142 is an abundant number, since it is smaller than the sum of its proper divisors (144842658).

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

140342142 is a wasteful number, since it uses less digits than its factorization.

140342142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 140342142 is about 11846.6088818700. The cubic root of 140342142 is about 519.6720590047.

Adding to 140342142 its reverse (241243041), we get a palindrome (381585183).

The spelling of 140342142 in words is "one hundred forty million, three hundred forty-two thousand, one hundred forty-two".