140562643 has 4 divisors (see below), whose sum is σ = 151375168. Its totient is φ = 129750120.

The previous prime is 140562629. The next prime is 140562659. The reversal of 140562643 is 346265041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346265041 = 59 ⋅5868899.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140562643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140362643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5406243 + ... + 5406268.

It is an arithmetic number, because the mean of its divisors is an integer number (37843792).

Almost surely, 2^140562643 is an apocalyptic number.

140562643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

140562643 is a deficient number, since it is larger than the sum of its proper divisors (10812525).

140562643 is a wasteful number, since it uses less digits than its factorization.

140562643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10812524.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 140562643 is about 11855.9117321276. The cubic root of 140562643 is about 519.9440805252.

The spelling of 140562643 in words is "one hundred forty million, five hundred sixty-two thousand, six hundred forty-three".