140142011 has 4 divisors (see below), whose sum is σ = 141586872. Its totient is φ = 138697152.

The previous prime is 140141993. The next prime is 140142019. The reversal of 140142011 is 110241041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140142011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140142019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 722285 + ... + 722478.

It is an arithmetic number, because the mean of its divisors is an integer number (35396718).

Almost surely, 2^140142011 is an apocalyptic number.

140142011 is a deficient number, since it is larger than the sum of its proper divisors (1444861).

140142011 is an equidigital number, since it uses as much as digits as its factorization.

140142011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444860.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 140142011 is about 11838.1591051987. The cubic root of 140142011 is about 519.4249202071.

Adding to 140142011 its reverse (110241041), we get a palindrome (250383052).

The spelling of 140142011 in words is "one hundred forty million, one hundred forty-two thousand, eleven".