1285426514 has 12 divisors (see below), whose sum is σ = 1935262602. Its totient is φ = 640342080.

The previous prime is 1285426511. The next prime is 1285426573. The reversal of 1285426514 is 4156245821.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 925072225 + 360354289 = 30415^2 + 18983^2 .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285426511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 930104 + ... + 931484.

Almost surely, 2^1285426514 is an apocalyptic number.

1285426514 is a deficient number, since it is larger than the sum of its proper divisors (649836088).

1285426514 is an frugal number, since it uses more digits than its factorization.

1285426514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3101 (or 1720 counting only the distinct ones).

The product of its digits is 76800, while the sum is 38.

The square root of 1285426514 is about 35852.8452706337. The cubic root of 1285426514 is about 1087.2992402384.

The spelling of 1285426514 in words is "one billion, two hundred eighty-five million, four hundred twenty-six thousand, five hundred fourteen".