42510321217 has 8 divisors (see below), whose sum is σ = 52320395456. Its totient is φ = 33634539792.

The previous prime is 42510321197. The next prime is 42510321233. The reversal of 42510321217 is 71212301524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-42510321217 is a prime.

It is a super-2 number, since 2×42510321217² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42510321247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233573103 + ... + 233573284.

It is an arithmetic number, because the mean of its divisors is an integer number (6540049432).

Almost surely, 2^42510321217 is an apocalyptic number.

It is an amenable number.

42510321217 is a deficient number, since it is larger than the sum of its proper divisors (9810074239).

42510321217 is a wasteful number, since it uses less digits than its factorization.

42510321217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467146407.

The product of its (nonzero) digits is 3360, while the sum is 28.

The spelling of 42510321217 in words is "forty-two billion, five hundred ten million, three hundred twenty-one thousand, two hundred seventeen".