1012126439 has 2 divisors, whose sum is σ = 1012126440. Its totient is φ = 1012126438.

The previous prime is 1012126417. The next prime is 1012126459. The reversal of 1012126439 is 9346212101.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012126439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012126459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506063219 + 506063220.

It is an arithmetic number, because the mean of its divisors is an integer number (506063220).

Almost surely, 2^1012126439 is an apocalyptic number.

1012126439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012126439 is an equidigital number, since it uses as much as digits as its factorization.

1012126439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1012126439 is about 31813.9346670606. The cubic root of 1012126439 is about 1004.0259165783.

The spelling of 1012126439 in words is "one billion, twelve million, one hundred twenty-six thousand, four hundred thirty-nine".