140153509 has 2 divisors, whose sum is σ = 140153510. Its totient is φ = 140153508.

The previous prime is 140153501. The next prime is 140153537. The reversal of 140153509 is 905351041.

It is an a-pointer prime, because the next prime (140153537) can be obtained adding 140153509 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110145025 + 30008484 = 10495^2 + 5478^2 .

It is a cyclic number.

It is not a de Polignac number, because 140153509 - 2³ = 140153501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140153501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70076754 + 70076755.

It is an arithmetic number, because the mean of its divisors is an integer number (70076755).

Almost surely, 2^140153509 is an apocalyptic number.

It is an amenable number.

140153509 is a deficient number, since it is larger than the sum of its proper divisors (1).

140153509 is an equidigital number, since it uses as much as digits as its factorization.

140153509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 140153509 is about 11838.6447281773. The cubic root of 140153509 is about 519.4391252847.

The spelling of 140153509 in words is "one hundred forty million, one hundred fifty-three thousand, five hundred nine".