1040140039 has 2 divisors, whose sum is σ = 1040140040. Its totient is φ = 1040140038.

The previous prime is 1040140037. The next prime is 1040140061. The reversal of 1040140039 is 9300410401.

It is an a-pointer prime, because the next prime (1040140061) can be obtained adding 1040140039 to its sum of digits (22).

It is a weak prime.

It is an emirp because it is prime and its reverse (9300410401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1040140039 - 2¹ = 1040140037 is a prime.

Together with 1040140037, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1040140037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520070019 + 520070020.

It is an arithmetic number, because the mean of its divisors is an integer number (520070020).

Almost surely, 2^1040140039 is an apocalyptic number.

1040140039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040140039 is an equidigital number, since it uses as much as digits as its factorization.

1040140039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1040140039 is about 32251.2021326338. The cubic root of 1040140039 is about 1013.2048767247.

The spelling of 1040140039 in words is "one billion, forty million, one hundred forty thousand, thirty-nine".