145730422 has 4 divisors (see below), whose sum is σ = 218595636. Its totient is φ = 72865210.

The previous prime is 145730419. The next prime is 145730447. The reversal of 145730422 is 224037541.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36432604 + ... + 36432607.

It is an arithmetic number, because the mean of its divisors is an integer number (54648909).

Almost surely, 2^145730422 is an apocalyptic number.

145730422 is a deficient number, since it is larger than the sum of its proper divisors (72865214).

145730422 is an equidigital number, since it uses as much as digits as its factorization.

145730422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72865213.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 145730422 is about 12071.8856025063. The cubic root of 145730422 is about 526.2394563855.

Adding to 145730422 its reverse (224037541), we get a palindrome (369767963).

The spelling of 145730422 in words is "one hundred forty-five million, seven hundred thirty thousand, four hundred twenty-two".