140250257 has 8 divisors (see below), whose sum is σ = 163003200. Its totient is φ = 118176624.

The previous prime is 140250247. The next prime is 140250277. The reversal of 140250257 is 752052041.

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 140250257 - 2⁴ = 140250241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140250247) 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, 169382 + ... + 170207.

It is an arithmetic number, because the mean of its divisors is an integer number (20375400).

Almost surely, 2^140250257 is an apocalyptic number.

It is an amenable number.

140250257 is a deficient number, since it is larger than the sum of its proper divisors (22752943).

140250257 is an equidigital number, since it uses as much as digits as its factorization.

140250257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339655.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 140250257 is about 11842.7301328705. The cubic root of 140250257 is about 519.5586207762.

The spelling of 140250257 in words is "one hundred forty million, two hundred fifty thousand, two hundred fifty-seven".