1285007279 has 2 divisors, whose sum is σ = 1285007280. Its totient is φ = 1285007278.

The previous prime is 1285007267. The next prime is 1285007287. The reversal of 1285007279 is 9727005821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1285007279 - 2¹² = 1285003183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1285007239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642503639 + 642503640.

It is an arithmetic number, because the mean of its divisors is an integer number (642503640).

Almost surely, 2^1285007279 is an apocalyptic number.

1285007279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285007279 is an equidigital number, since it uses as much as digits as its factorization.

1285007279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 1285007279 is about 35846.9981867380. The cubic root of 1285007279 is about 1087.1810217699.

The spelling of 1285007279 in words is "one billion, two hundred eighty-five million, seven thousand, two hundred seventy-nine".