1026020459 has 4 divisors (see below), whose sum is σ = 1026088440. Its totient is φ = 1025952480.

The previous prime is 1026020453. The next prime is 1026020473. The reversal of 1026020459 is 9540206201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1026020459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1026020453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62 + ... + 45299.

It is an arithmetic number, because the mean of its divisors is an integer number (256522110).

Almost surely, 2^1026020459 is an apocalyptic number.

1026020459 is a deficient number, since it is larger than the sum of its proper divisors (67981).

1026020459 is an equidigital number, since it uses as much as digits as its factorization.

1026020459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67980.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1026020459 is about 32031.5541146539. The cubic root of 1026020459 is about 1008.5993259576.

The spelling of 1026020459 in words is "one billion, twenty-six million, twenty thousand, four hundred fifty-nine".