145103442 has 48 divisors (see below), whose sum is σ = 320604480. Its totient is φ = 43748320.

The previous prime is 145103423. The next prime is 145103447. The reversal of 145103442 is 244301541.

It is not an unprimeable number, because it can be changed into a prime (145103447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 194923 + ... + 195665.

It is an arithmetic number, because the mean of its divisors is an integer number (6679260).

Almost surely, 2^145103442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145103442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160302240).

145103442 is an abundant number, since it is smaller than the sum of its proper divisors (175501038).

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

145103442 is a wasteful number, since it uses less digits than its factorization.

145103442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039 (or 1028 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 145103442 is about 12045.8890082883. The cubic root of 145103442 is about 525.4836866651.

Adding to 145103442 its reverse (244301541), we get a palindrome (389404983).

The spelling of 145103442 in words is "one hundred forty-five million, one hundred three thousand, four hundred forty-two".