140251357 has 4 divisors (see below), whose sum is σ = 140627740. Its totient is φ = 139874976.

The previous prime is 140251297. The next prime is 140251361. The reversal of 140251357 is 753152041.

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: 753152041 = 181 ⋅4161061.

It can be written as a sum of positive squares in 2 ways, for example, as 95374756 + 44876601 = 9766^2 + 6699^2 .

It is a cyclic number.

It is not a de Polignac number, because 140251357 - 2⁷ = 140251229 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 (140251457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187632 + ... + 188377.

It is an arithmetic number, because the mean of its divisors is an integer number (35156935).

Almost surely, 2^140251357 is an apocalyptic number.

It is an amenable number.

140251357 is a deficient number, since it is larger than the sum of its proper divisors (376383).

140251357 is an equidigital number, since it uses as much as digits as its factorization.

140251357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376382.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 140251357 is about 11842.7765747733. The cubic root of 140251357 is about 519.5599790933.

It can be divided in two parts, 140251 and 357, that added together give a cube (140608 = 52³).

The spelling of 140251357 in words is "one hundred forty million, two hundred fifty-one thousand, three hundred fifty-seven".