42010005281 has 4 divisors (see below), whose sum is σ = 42986982192. Its totient is φ = 41033028372.

The previous prime is 42010005223. The next prime is 42010005283. The reversal of 42010005281 is 18250001024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42010005281 - 2³⁰ = 40936263457 is a prime.

It is a super-2 number, since 2×42010005281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42010005283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488488391 + ... + 488488476.

It is an arithmetic number, because the mean of its divisors is an integer number (10746745548).

Almost surely, 2^42010005281 is an apocalyptic number.

It is an amenable number.

42010005281 is a deficient number, since it is larger than the sum of its proper divisors (976976911).

42010005281 is an equidigital number, since it uses as much as digits as its factorization.

42010005281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976976910.

The product of its (nonzero) digits is 640, while the sum is 23.

The spelling of 42010005281 in words is "forty-two billion, ten million, five thousand, two hundred eighty-one".