145020144 has 40 divisors (see below), whose sum is σ = 377511552. Its totient is φ = 47968960.

The previous prime is 145020101. The next prime is 145020163. The reversal of 145020144 is 441020541.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 145020144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5244 + ... + 17819.

Almost surely, 2^145020144 is an apocalyptic number.

It is an amenable number.

145020144 is an abundant number, since it is smaller than the sum of its proper divisors (232491408).

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

145020144 is a wasteful number, since it uses less digits than its factorization.

145020144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23205 (or 23199 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 145020144 is about 12042.4309838172. The cubic root of 145020144 is about 525.3831144617.

Adding to 145020144 its reverse (441020541), we get a palindrome (586040685).

The spelling of 145020144 in words is "one hundred forty-five million, twenty thousand, one hundred forty-four".