140642943 has 8 divisors (see below), whose sum is σ = 214313088. Its totient is φ = 80367384.

The previous prime is 140642933. The next prime is 140642963. The reversal of 140642943 is 349246041.

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

It is not a de Polignac number, because 140642943 - 2⁴ = 140642927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140642903) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3348621 + ... + 3348662.

It is an arithmetic number, because the mean of its divisors is an integer number (26789136).

Almost surely, 2^140642943 is an apocalyptic number.

140642943 is a deficient number, since it is larger than the sum of its proper divisors (73670145).

140642943 is an equidigital number, since it uses as much as digits as its factorization.

140642943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6697293.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 140642943 is about 11859.2977448077. The cubic root of 140642943 is about 520.0430721225.

Adding to 140642943 its reverse (349246041), we get a palindrome (489888984).

The spelling of 140642943 in words is "one hundred forty million, six hundred forty-two thousand, nine hundred forty-three".