140242142 has 8 divisors (see below), whose sum is σ = 210568800. Its totient is φ = 70052544.

The previous prime is 140242139. The next prime is 140242147. The reversal of 140242142 is 241242041.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140242147) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 31667 + ... + 35822.

It is an arithmetic number, because the mean of its divisors is an integer number (26321100).

Almost surely, 2^140242142 is an apocalyptic number.

140242142 is a deficient number, since it is larger than the sum of its proper divisors (70326658).

140242142 is a wasteful number, since it uses less digits than its factorization.

140242142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68530.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 140242142 is about 11842.3875126598. The cubic root of 140242142 is about 519.5485998806.

Adding to 140242142 its reverse (241242041), we get a palindrome (381484183).

The spelling of 140242142 in words is "one hundred forty million, two hundred forty-two thousand, one hundred forty-two".