145105140 has 48 divisors (see below), whose sum is σ = 409046400. Its totient is φ = 38432640.

The previous prime is 145105133. The next prime is 145105151. The reversal of 145105140 is 41501541.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 825 + ... + 17055.

It is an arithmetic number, because the mean of its divisors is an integer number (8521800).

Almost surely, 2^145105140 is an apocalyptic number.

145105140 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 145105140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204523200).

145105140 is an abundant number, since it is smaller than the sum of its proper divisors (263941260).

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

145105140 is a wasteful number, since it uses less digits than its factorization.

145105140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16392 (or 16390 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 145105140 is about 12045.9594885588. The cubic root of 145105140 is about 525.4857363932.

Adding to 145105140 its reverse (41501541), we get a palindrome (186606681).

The spelling of 145105140 in words is "one hundred forty-five million, one hundred five thousand, one hundred forty".