42217474247 has 4 divisors (see below), whose sum is σ = 45464972280. Its totient is φ = 38969976216.

The previous prime is 42217474231. The next prime is 42217474253. The reversal of 42217474247 is 74247471224.

42217474247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42217474247 - 2⁴ = 42217474231 is a prime.

It is a super-2 number, since 2×42217474247² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42217474198 and 42217474207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42217474267) 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, 1623748997 + ... + 1623749022.

It is an arithmetic number, because the mean of its divisors is an integer number (11366243070).

Almost surely, 2^42217474247 is an apocalyptic number.

42217474247 is a deficient number, since it is larger than the sum of its proper divisors (3247498033).

42217474247 is a wasteful number, since it uses less digits than its factorization.

42217474247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3247498032.

The product of its digits is 702464, while the sum is 44.

The spelling of 42217474247 in words is "forty-two billion, two hundred seventeen million, four hundred seventy-four thousand, two hundred forty-seven".