140352139 has 2 divisors, whose sum is σ = 140352140. Its totient is φ = 140352138.

The previous prime is 140352103. The next prime is 140352151. The reversal of 140352139 is 931253041.

140352139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (931253041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140352139 is a prime.

It is not a weakly prime, because it can be changed into another prime (140358139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70176069 + 70176070.

It is an arithmetic number, because the mean of its divisors is an integer number (70176070).

Almost surely, 2^140352139 is an apocalyptic number.

140352139 is a deficient number, since it is larger than the sum of its proper divisors (1).

140352139 is an equidigital number, since it uses as much as digits as its factorization.

140352139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 140352139 is about 11847.0308094476. The cubic root of 140352139 is about 519.6843979884.

The spelling of 140352139 in words is "one hundred forty million, three hundred fifty-two thousand, one hundred thirty-nine".