432421403 has 2 divisors, whose sum is σ = 432421404. Its totient is φ = 432421402.

The previous prime is 432421397. The next prime is 432421447. The reversal of 432421403 is 304124234.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 432421403 - 2⁸ = 432421147 is a prime.

It is not a weakly prime, because it can be changed into another prime (432421903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216210701 + 216210702.

It is an arithmetic number, because the mean of its divisors is an integer number (216210702).

Almost surely, 2^432421403 is an apocalyptic number.

432421403 is a deficient number, since it is larger than the sum of its proper divisors (1).

432421403 is an equidigital number, since it uses as much as digits as its factorization.

432421403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 432421403 is about 20794.7446004994. The cubic root of 432421403 is about 756.1983530697.

Adding to 432421403 its reverse (304124234), we get a palindrome (736545637).

The spelling of 432421403 in words is "four hundred thirty-two million, four hundred twenty-one thousand, four hundred three".