145203222 has 32 divisors (see below), whose sum is σ = 314997984. Its totient is φ = 44441600.

The previous prime is 145203211. The next prime is 145203229. The reversal of 145203222 is 222302541.

145203222 is nontrivially palindromic in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145203229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13179 + ... + 21542.

It is an arithmetic number, because the mean of its divisors is an integer number (9843687).

Almost surely, 2^145203222 is an apocalyptic number.

145203222 is an abundant number, since it is smaller than the sum of its proper divisors (169794762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145203222 is a wasteful number, since it uses less digits than its factorization.

145203222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34784.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 145203222 is about 12050.0299584690. The cubic root of 145203222 is about 525.6041082248.

Adding to 145203222 its reverse (222302541), we get a palindrome (367505763).

The spelling of 145203222 in words is "one hundred forty-five million, two hundred three thousand, two hundred twenty-two".