140787643 has 8 divisors (see below), whose sum is σ = 142481808. Its totient is φ = 139098624.

The previous prime is 140787641. The next prime is 140787667. The reversal of 140787643 is 346787041.

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

It is a cyclic number.

It is not a de Polignac number, because 140787643 - 2¹ = 140787641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140787596 and 140787605.

It is not an unprimeable number, because it can be changed into a prime (140787641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91680 + ... + 93202.

It is an arithmetic number, because the mean of its divisors is an integer number (17810226).

Almost surely, 2^140787643 is an apocalyptic number.

140787643 is a deficient number, since it is larger than the sum of its proper divisors (1694165).

140787643 is an equidigital number, since it uses as much as digits as its factorization.

140787643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 140787643 is about 11865.3968749469. The cubic root of 140787643 is about 520.2213591585.

The spelling of 140787643 in words is "one hundred forty million, seven hundred eighty-seven thousand, six hundred forty-three".