140250281 has 4 divisors (see below), whose sum is σ = 140310864. Its totient is φ = 140189700.

The previous prime is 140250277. The next prime is 140250283. The reversal of 140250281 is 182052041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140250281 - 2² = 140250277 is a prime.

It is a super-2 number, since 2×140250281² = 39340282641157922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140250283) 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, 26675 + ... + 31496.

It is an arithmetic number, because the mean of its divisors is an integer number (35077716).

Almost surely, 2^140250281 is an apocalyptic number.

It is an amenable number.

140250281 is a deficient number, since it is larger than the sum of its proper divisors (60583).

140250281 is an equidigital number, since it uses as much as digits as its factorization.

140250281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60582.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 140250281 is about 11842.7311461504. The cubic root of 140250281 is about 519.5586504122.

The spelling of 140250281 in words is "one hundred forty million, two hundred fifty thousand, two hundred eighty-one".