140245251 has 12 divisors (see below), whose sum is σ = 197354952. Its totient is φ = 88575264.

The previous prime is 140245181. The next prime is 140245253. The reversal of 140245251 is 152542041.

140245251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 140245251 - 2⁷ = 140245123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140245253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63666 + ... + 65831.

It is an arithmetic number, because the mean of its divisors is an integer number (16446246).

Almost surely, 2^140245251 is an apocalyptic number.

140245251 is a deficient number, since it is larger than the sum of its proper divisors (57109701).

140245251 is a wasteful number, since it uses less digits than its factorization.

140245251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129538 (or 129519 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 140245251 is about 11842.5187776925. The cubic root of 140245251 is about 519.5524391086.

Adding to 140245251 its reverse (152542041), we get a palindrome (292787292).

The spelling of 140245251 in words is "one hundred forty million, two hundred forty-five thousand, two hundred fifty-one".