140078539 has 2 divisors, whose sum is σ = 140078540. Its totient is φ = 140078538.

The previous prime is 140078537. The next prime is 140078551. The reversal of 140078539 is 935870041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140078539 - 2¹ = 140078537 is a prime.

Together with 140078537, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 140078498 and 140078507.

It is not a weakly prime, because it can be changed into another prime (140078537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70039269 + 70039270.

It is an arithmetic number, because the mean of its divisors is an integer number (70039270).

Almost surely, 2^140078539 is an apocalyptic number.

140078539 is a deficient number, since it is larger than the sum of its proper divisors (1).

140078539 is an equidigital number, since it uses as much as digits as its factorization.

140078539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 140078539 is about 11835.4779793636. The cubic root of 140078539 is about 519.3464904370.

The spelling of 140078539 in words is "one hundred forty million, seventy-eight thousand, five hundred thirty-nine".