42220897947 has 8 divisors (see below), whose sum is σ = 62549478480. Its totient is φ = 28147265280.

The previous prime is 42220897931. The next prime is 42220898017. The reversal of 42220897947 is 74979802224.

It is a happy number.

42220897947 is a `hidden beast` number, since 422 + 208 + 9 + 7 + 9 + 4 + 7 = 666.

It is not a de Polignac number, because 42220897947 - 2⁴ = 42220897931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42220897893 and 42220897902.

It is not an unprimeable number, because it can be changed into a prime (42220897907) 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, 781868454 + ... + 781868507.

It is an arithmetic number, because the mean of its divisors is an integer number (7818684810).

Almost surely, 2^42220897947 is an apocalyptic number.

42220897947 is a deficient number, since it is larger than the sum of its proper divisors (20328580533).

42220897947 is a wasteful number, since it uses less digits than its factorization.

42220897947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563736970 (or 1563736964 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 42220897947 in words is "forty-two billion, two hundred twenty million, eight hundred ninety-seven thousand, nine hundred forty-seven".