140840651 has 6 divisors (see below), whose sum is σ = 163835100. Its totient is φ = 120720516.

The previous prime is 140840629. The next prime is 140840653. The reversal of 140840651 is 156048041.

It is a de Polignac number, because none of the positive numbers 2^k-140840651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140840653) 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 5 ways as a sum of consecutive naturals, for example, 1437101 + ... + 1437198.

It is an arithmetic number, because the mean of its divisors is an integer number (27305850).

Almost surely, 2^140840651 is an apocalyptic number.

140840651 is a deficient number, since it is larger than the sum of its proper divisors (22994449).

140840651 is an equidigital number, since it uses as much as digits as its factorization.

140840651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2874313 (or 2874306 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 140840651 is about 11867.6303868970. The cubic root of 140840651 is about 520.2866405356.

Adding to 140840651 its reverse (156048041), we get a palindrome (296888692).

The spelling of 140840651 in words is "one hundred forty million, eight hundred forty thousand, six hundred fifty-one".