145000100 has 72 divisors (see below), whose sum is σ = 361226880. Its totient is φ = 49489920.

The previous prime is 145000099. The next prime is 145000117. The reversal of 145000100 is 1000541.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 251012 + ... + 251588.

It is an arithmetic number, because the mean of its divisors is an integer number (5017040).

Almost surely, 2^145000100 is an apocalyptic number.

145000100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145000100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180613440).

145000100 is an abundant number, since it is smaller than the sum of its proper divisors (216226780).

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

145000100 is a wasteful number, since it uses less digits than its factorization.

145000100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957 (or 950 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 145000100 is about 12041.5987310656. The cubic root of 145000100 is about 525.3589080214.

Adding to 145000100 its reverse (1000541), we get a palindrome (146000641).

The spelling of 145000100 in words is "one hundred forty-five million, one hundred", and thus it is an aban number.