42661103 has 2 divisors, whose sum is σ = 42661104. Its totient is φ = 42661102.

The previous prime is 42661079. The next prime is 42661133. The reversal of 42661103 is 30116624.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42661103 - 2⁶ = 42661039 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42661133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21330551 + 21330552.

It is an arithmetic number, because the mean of its divisors is an integer number (21330552).

Almost surely, 2^42661103 is an apocalyptic number.

42661103 is a deficient number, since it is larger than the sum of its proper divisors (1).

42661103 is an equidigital number, since it uses as much as digits as its factorization.

42661103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 42661103 is about 6531.5467540239. The cubic root of 42661103 is about 349.4169967639.

Adding to 42661103 its reverse (30116624), we get a palindrome (72777727).

The spelling of 42661103 in words is "forty-two million, six hundred sixty-one thousand, one hundred three".