145940227 has 4 divisors (see below), whose sum is σ = 146000160. Its totient is φ = 145880296.

The previous prime is 145940191. The next prime is 145940233. The reversal of 145940227 is 722049541.

145940227 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 145940227 - 2²⁷ = 11722499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145940192 and 145940201.

It is not an unprimeable number, because it can be changed into a prime (145943227) 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, 26152 + ... + 31237.

It is an arithmetic number, because the mean of its divisors is an integer number (36500040).

Almost surely, 2^145940227 is an apocalyptic number.

145940227 is a deficient number, since it is larger than the sum of its proper divisors (59933).

145940227 is an equidigital number, since it uses as much as digits as its factorization.

145940227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59932.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 145940227 is about 12080.5722960462. The cubic root of 145940227 is about 526.4918738883.

Adding to 145940227 its reverse (722049541), we get a palindrome (867989768).

The spelling of 145940227 in words is "one hundred forty-five million, nine hundred forty thousand, two hundred twenty-seven".