4227742945 has 4 divisors (see below), whose sum is σ = 5073291540. Its totient is φ = 3382194352.

The previous prime is 4227742927. The next prime is 4227742969. The reversal of 4227742945 is 5492477224.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3228171489 + 999571456 = 56817^2 + 31616^2 .

It is a cyclic number.

It is not a de Polignac number, because 4227742945 - 2²⁵ = 4194188513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4227742895 and 4227742904.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422774290 + ... + 422774299.

It is an arithmetic number, because the mean of its divisors is an integer number (1268322885).

Almost surely, 2^4227742945 is an apocalyptic number.

It is an amenable number.

4227742945 is a deficient number, since it is larger than the sum of its proper divisors (845548595).

4227742945 is an equidigital number, since it uses as much as digits as its factorization.

4227742945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845548594.

The product of its digits is 1128960, while the sum is 46.

The square root of 4227742945 is about 65021.0961534793. The cubic root of 4227742945 is about 1616.9733338013.

The spelling of 4227742945 in words is "four billion, two hundred twenty-seven million, seven hundred forty-two thousand, nine hundred forty-five".