1000423451 has 2 divisors, whose sum is σ = 1000423452. Its totient is φ = 1000423450.

The previous prime is 1000423439. The next prime is 1000423453. The reversal of 1000423451 is 1543240001.

It is a strong prime.

It is an emirp because it is prime and its reverse (1543240001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1000423451 - 2²⁶ = 933314587 is a prime.

Together with 1000423453, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1000423453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500211725 + 500211726.

It is an arithmetic number, because the mean of its divisors is an integer number (500211726).

Almost surely, 2^1000423451 is an apocalyptic number.

1000423451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000423451 is an equidigital number, since it uses as much as digits as its factorization.

1000423451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1000423451 is about 31629.4712412332. The cubic root of 1000423451 is about 1000.1411304146.

Adding to 1000423451 its reverse (1543240001), we get a palindrome (2543663452).

The spelling of 1000423451 in words is "one billion, four hundred twenty-three thousand, four hundred fifty-one".