42331603 has 2 divisors, whose sum is σ = 42331604. Its totient is φ = 42331602.

The previous prime is 42331591. The next prime is 42331607. The reversal of 42331603 is 30613324.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42331603 is a prime.

It is a super-2 number, since 2×42331603² = 3583929225099218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42331607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21165801 + 21165802.

It is an arithmetic number, because the mean of its divisors is an integer number (21165802).

Almost surely, 2^42331603 is an apocalyptic number.

42331603 is a deficient number, since it is larger than the sum of its proper divisors (1).

42331603 is an equidigital number, since it uses as much as digits as its factorization.

42331603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 42331603 is about 6506.2741257958. The cubic root of 42331603 is about 348.5150776329.

Adding to 42331603 its reverse (30613324), we get a palindrome (72944927).

The spelling of 42331603 in words is "forty-two million, three hundred thirty-one thousand, six hundred three".