145023450 has 96 divisors (see below), whose sum is σ = 422597952. Its totient is φ = 32448000.

The previous prime is 145023421. The next prime is 145023491. The reversal of 145023450 is 54320541.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145023450.

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 47 ways as a sum of consecutive naturals, for example, 18070 + ... + 24830.

It is an arithmetic number, because the mean of its divisors is an integer number (4402062).

Almost surely, 2^145023450 is an apocalyptic number.

145023450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 145023450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211298976).

145023450 is an abundant number, since it is smaller than the sum of its proper divisors (277574502).

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

145023450 is a wasteful number, since it uses less digits than its factorization.

145023450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6800 (or 6795 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 145023450 is about 12042.5682476787. The cubic root of 145023450 is about 525.3871067884.

Adding to 145023450 its reverse (54320541), we get a palindrome (199343991).

The spelling of 145023450 in words is "one hundred forty-five million, twenty-three thousand, four hundred fifty".