145424322 has 48 divisors (see below), whose sum is σ = 331312800. Its totient is φ = 47799072.

The previous prime is 145424263. The next prime is 145424327. The reversal of 145424322 is 223424541.

It is a super-2 number, since 2×145424322² = 42296466858319368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (145424327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33429 + ... + 37527.

It is an arithmetic number, because the mean of its divisors is an integer number (6902350).

Almost surely, 2^145424322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145424322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165656400).

145424322 is an abundant number, since it is smaller than the sum of its proper divisors (185888478).

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

145424322 is an equidigital number, since it uses as much as digits as its factorization.

145424322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4189 (or 4177 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 145424322 is about 12059.2007197824. The cubic root of 145424322 is about 525.8707509158.

Adding to 145424322 its reverse (223424541), we get a palindrome (368848863).

The spelling of 145424322 in words is "one hundred forty-five million, four hundred twenty-four thousand, three hundred twenty-two".