73142227 has 2 divisors, whose sum is σ = 73142228. Its totient is φ = 73142226.

The previous prime is 73142219. The next prime is 73142239. The reversal of 73142227 is 72224137.

It is a weak prime.

It is an emirp because it is prime and its reverse (72224137) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73142227 - 2³ = 73142219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 73142195 and 73142204.

It is not a weakly prime, because it can be changed into another prime (73142207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36571113 + 36571114.

It is an arithmetic number, because the mean of its divisors is an integer number (36571114).

Almost surely, 2^73142227 is an apocalyptic number.

73142227 is a deficient number, since it is larger than the sum of its proper divisors (1).

73142227 is an equidigital number, since it uses as much as digits as its factorization.

73142227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4704, while the sum is 28.

The square root of 73142227 is about 8552.3229008264. The cubic root of 73142227 is about 418.2051658744.

The spelling of 73142227 in words is "seventy-three million, one hundred forty-two thousand, two hundred twenty-seven".