140643267 has 4 divisors (see below), whose sum is σ = 187524360. Its totient is φ = 93762176.

The previous prime is 140643233. The next prime is 140643277. The reversal of 140643267 is 762346041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 762346041 = 3 ⋅254115347.

It is a cyclic number.

It is not a de Polignac number, because 140643267 - 2¹¹ = 140641219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140643277) 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, 23440542 + ... + 23440547.

It is an arithmetic number, because the mean of its divisors is an integer number (46881090).

Almost surely, 2^140643267 is an apocalyptic number.

140643267 is a deficient number, since it is larger than the sum of its proper divisors (46881093).

140643267 is an equidigital number, since it uses as much as digits as its factorization.

140643267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46881092.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 140643267 is about 11859.3114049678. The cubic root of 140643267 is about 520.0434714643.

The spelling of 140643267 in words is "one hundred forty million, six hundred forty-three thousand, two hundred sixty-seven".