42110281 has 2 divisors, whose sum is σ = 42110282. Its totient is φ = 42110280.

The previous prime is 42110273. The next prime is 42110293. The reversal of 42110281 is 18201124.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35940025 + 6170256 = 5995^2 + 2484^2 .

It is a cyclic number.

It is not a de Polignac number, because 42110281 - 2³ = 42110273 is a prime.

It is a super-2 number, since 2×42110281² = 3546551531797922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42110381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21055140 + 21055141.

It is an arithmetic number, because the mean of its divisors is an integer number (21055141).

Almost surely, 2^42110281 is an apocalyptic number.

It is an amenable number.

42110281 is a deficient number, since it is larger than the sum of its proper divisors (1).

42110281 is an equidigital number, since it uses as much as digits as its factorization.

42110281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 42110281 is about 6489.2434844133. The cubic root of 42110281 is about 347.9066364461.

The spelling of 42110281 in words is "forty-two million, one hundred ten thousand, two hundred eighty-one".