42245101 has 2 divisors, whose sum is σ = 42245102. Its totient is φ = 42245100.

The previous prime is 42245087. The next prime is 42245107. The reversal of 42245101 is 10154224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42237001 + 8100 = 6499^2 + 90^2 .

It is a cyclic number.

It is not a de Polignac number, because 42245101 - 2⁵ = 42245069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42245107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21122550 + 21122551.

It is an arithmetic number, because the mean of its divisors is an integer number (21122551).

Almost surely, 2^42245101 is an apocalyptic number.

It is an amenable number.

42245101 is a deficient number, since it is larger than the sum of its proper divisors (1).

42245101 is an equidigital number, since it uses as much as digits as its factorization.

42245101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 42245101 is about 6499.6231429214. The cubic root of 42245101 is about 348.2775261180.

Adding to 42245101 its reverse (10154224), we get a palindrome (52399325).

The spelling of 42245101 in words is "forty-two million, two hundred forty-five thousand, one hundred one".