145243450 has 48 divisors (see below), whose sum is σ = 296543520. Its totient is φ = 52488000.

The previous prime is 145243447. The next prime is 145243477. The reversal of 145243450 is 54342541.

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 23 ways as a sum of consecutive naturals, for example, 98821 + ... + 100279.

It is an arithmetic number, because the mean of its divisors is an integer number (6177990).

Almost surely, 2^145243450 is an apocalyptic number.

145243450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145243450 is an abundant number, since it is smaller than the sum of its proper divisors (151300070).

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

145243450 is a wasteful number, since it uses less digits than its factorization.

145243450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1663 (or 1658 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 145243450 is about 12051.6990503414. The cubic root of 145243450 is about 525.6526426156.

Adding to 145243450 its reverse (54342541), we get a palindrome (199585991).

Subtracting from 145243450 its reverse (54342541), we obtain a palindrome (90900909).

The spelling of 145243450 in words is "one hundred forty-five million, two hundred forty-three thousand, four hundred fifty".