42432503 has 2 divisors, whose sum is σ = 42432504. Its totient is φ = 42432502.

The previous prime is 42432497. The next prime is 42432557. The reversal of 42432503 is 30523424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42432503 - 2¹⁴ = 42416119 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42432703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21216251 + 21216252.

It is an arithmetic number, because the mean of its divisors is an integer number (21216252).

Almost surely, 2^42432503 is an apocalyptic number.

42432503 is a deficient number, since it is larger than the sum of its proper divisors (1).

42432503 is an equidigital number, since it uses as much as digits as its factorization.

42432503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 42432503 is about 6514.0235645874. The cubic root of 42432503 is about 348.7917603500.

Adding to 42432503 its reverse (30523424), we get a palindrome (72955927).

The spelling of 42432503 in words is "forty-two million, four hundred thirty-two thousand, five hundred three".