140251 has 4 divisors (see below), whose sum is σ = 141400. Its totient is φ = 139104.

The previous prime is 140249. The next prime is 140263. The reversal of 140251 is 152041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140251 - 2¹ = 140249 is a prime.

It is the 375-th Hogben number.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (140221) by changing a digit.

It is a nontrivial repunit in base 374.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366 + ... + 643.

It is an arithmetic number, because the mean of its divisors is an integer number (35350).

2¹⁴⁰²⁵¹ is an apocalyptic number.

140251 is a deficient number, since it is larger than the sum of its proper divisors (1149).

140251 is a wasteful number, since it uses less digits than its factorization.

140251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 140251 is about 374.5010013338. The cubic root of 140251 is about 51.9559538258.

Adding to 140251 its reverse (152041), we get a palindrome (292292).

The spelling of 140251 in words is "one hundred forty thousand, two hundred fifty-one".