140266999 has 8 divisors (see below), whose sum is σ = 142758720. Its totient is φ = 137781600.

The previous prime is 140266981. The next prime is 140267003. The reversal of 140266999 is 999662041.

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 140266999 - 2¹⁹ = 139742711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140266199) 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, 74034 + ... + 75904.

It is an arithmetic number, because the mean of its divisors is an integer number (17844840).

Almost surely, 2^140266999 is an apocalyptic number.

140266999 is a deficient number, since it is larger than the sum of its proper divisors (2491721).

140266999 is a wasteful number, since it uses less digits than its factorization.

140266999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 140266999 is about 11843.4369589237. The cubic root of 140266999 is about 519.5792935947.

It can be divided in two parts, 14026 and 6999, that added together give a square (21025 = 145²).

The spelling of 140266999 in words is "one hundred forty million, two hundred sixty-six thousand, nine hundred ninety-nine".