145112440 has 32 divisors (see below), whose sum is σ = 356186160. Its totient is φ = 52768000.

The previous prime is 145112417. The next prime is 145112449. The reversal of 145112440 is 44211541.

145112440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145112449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164461 + ... + 165340.

Almost surely, 2^145112440 is an apocalyptic number.

145112440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145112440 is an abundant number, since it is smaller than the sum of its proper divisors (211073720).

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

145112440 is a wasteful number, since it uses less digits than its factorization.

145112440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329823 (or 329819 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 145112440 is about 12046.2624909139. The cubic root of 145112440 is about 525.4945483520.

Adding to 145112440 its reverse (44211541), we get a palindrome (189323981).

The spelling of 145112440 in words is "one hundred forty-five million, one hundred twelve thousand, four hundred forty".