145112240 has 160 divisors (see below), whose sum is σ = 429305856. Its totient is φ = 44375040.

The previous prime is 145112213. The next prime is 145112263. The reversal of 145112240 is 42211541.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 225359 + ... + 226001.

Almost surely, 2^145112240 is an apocalyptic number.

145112240 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 145112240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214652928).

145112240 is an abundant number, since it is smaller than the sum of its proper divisors (284193616).

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

145112240 is a wasteful number, since it uses less digits than its factorization.

145112240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707 (or 701 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 145112240 is about 12046.2541895811. The cubic root of 145112240 is about 525.4943069324.

Adding to 145112240 its reverse (42211541), we get a palindrome (187323781).

The spelling of 145112240 in words is "one hundred forty-five million, one hundred twelve thousand, two hundred forty".