42744227 has 2 divisors, whose sum is σ = 42744228. Its totient is φ = 42744226.

The previous prime is 42744223. The next prime is 42744271. The reversal of 42744227 is 72244724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42744227 - 2² = 42744223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42744193 and 42744202.

It is not a weakly prime, because it can be changed into another prime (42744223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21372113 + 21372114.

It is an arithmetic number, because the mean of its divisors is an integer number (21372114).

Almost surely, 2^42744227 is an apocalyptic number.

42744227 is a deficient number, since it is larger than the sum of its proper divisors (1).

42744227 is an equidigital number, since it uses as much as digits as its factorization.

42744227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25088, while the sum is 32.

The square root of 42744227 is about 6537.9069280619. The cubic root of 42744227 is about 349.6437927003.

The spelling of 42744227 in words is "forty-two million, seven hundred forty-four thousand, two hundred twenty-seven".