145204422 has 32 divisors (see below), whose sum is σ = 333486720. Its totient is φ = 41685120.

The previous prime is 145204417. The next prime is 145204447. The reversal of 145204422 is 224402541.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 145204392 and 145204401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56643 + ... + 59150.

It is an arithmetic number, because the mean of its divisors is an integer number (10421460).

Almost surely, 2^145204422 is an apocalyptic number.

145204422 is an abundant number, since it is smaller than the sum of its proper divisors (188282298).

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

145204422 is a wasteful number, since it uses less digits than its factorization.

145204422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115828.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 145204422 is about 12050.0797507734. The cubic root of 145204422 is about 525.6055561339.

Adding to 145204422 its reverse (224402541), we get a palindrome (369606963).

The spelling of 145204422 in words is "one hundred forty-five million, two hundred four thousand, four hundred twenty-two".