140112509 has 2 divisors, whose sum is σ = 140112510. Its totient is φ = 140112508.

The previous prime is 140112493. The next prime is 140112559. The reversal of 140112509 is 905211041.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88416409 + 51696100 = 9403^2 + 7190^2 .

It is a cyclic number.

It is not a de Polignac number, because 140112509 - 2⁴ = 140112493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140112559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70056254 + 70056255.

It is an arithmetic number, because the mean of its divisors is an integer number (70056255).

Almost surely, 2^140112509 is an apocalyptic number.

It is an amenable number.

140112509 is a deficient number, since it is larger than the sum of its proper divisors (1).

140112509 is an equidigital number, since it uses as much as digits as its factorization.

140112509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 140112509 is about 11836.9129843891. The cubic root of 140112509 is about 519.3884687312.

The spelling of 140112509 in words is "one hundred forty million, one hundred twelve thousand, five hundred nine".