140261643 has 6 divisors (see below), whose sum is σ = 202600164. Its totient is φ = 93507756.

The previous prime is 140261609. The next prime is 140261651. The reversal of 140261643 is 346162041.

140261643 is a `hidden beast` number, since 1 + 4 + 0 + 2 + 616 + 43 = 666.

It is not a de Polignac number, because 140261643 - 2⁶ = 140261579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140261243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7792305 + ... + 7792322.

It is an arithmetic number, because the mean of its divisors is an integer number (33766694).

Almost surely, 2^140261643 is an apocalyptic number.

140261643 is a deficient number, since it is larger than the sum of its proper divisors (62338521).

140261643 is a wasteful number, since it uses less digits than its factorization.

140261643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15584633 (or 15584630 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 140261643 is about 11843.2108399707. The cubic root of 140261643 is about 519.5726802498.

The spelling of 140261643 in words is "one hundred forty million, two hundred sixty-one thousand, six hundred forty-three".