42231403 has 2 divisors, whose sum is σ = 42231404. Its totient is φ = 42231402.

The previous prime is 42231389. The next prime is 42231491. The reversal of 42231403 is 30413224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42231403 - 2⁹ = 42230891 is a prime.

It is not a weakly prime, because it can be changed into another prime (42231103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21115701 + 21115702.

It is an arithmetic number, because the mean of its divisors is an integer number (21115702).

Almost surely, 2^42231403 is an apocalyptic number.

42231403 is a deficient number, since it is larger than the sum of its proper divisors (1).

42231403 is an equidigital number, since it uses as much as digits as its factorization.

42231403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 42231403 is about 6498.5693040853. The cubic root of 42231403 is about 348.2398789812.

Adding to 42231403 its reverse (30413224), we get a palindrome (72644627).

The spelling of 42231403 in words is "forty-two million, two hundred thirty-one thousand, four hundred three".