1428026407 has 2 divisors, whose sum is σ = 1428026408. Its totient is φ = 1428026406.

The previous prime is 1428026399. The next prime is 1428026419. The reversal of 1428026407 is 7046208241.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1428026407 - 2³ = 1428026399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428026437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714013203 + 714013204.

It is an arithmetic number, because the mean of its divisors is an integer number (714013204).

Almost surely, 2^1428026407 is an apocalyptic number.

1428026407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428026407 is an equidigital number, since it uses as much as digits as its factorization.

1428026407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 1428026407 is about 37789.2366554288. The cubic root of 1428026407 is about 1126.1046353678.

The spelling of 1428026407 in words is "one billion, four hundred twenty-eight million, twenty-six thousand, four hundred seven".