145024040 has 64 divisors (see below), whose sum is σ = 375408000. Its totient is φ = 49390848.

The previous prime is 145024003. The next prime is 145024043. The reversal of 145024040 is 40420541.

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

It is not an unprimeable number, because it can be changed into a prime (145024043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42311 + ... + 45609.

It is an arithmetic number, because the mean of its divisors is an integer number (5865750).

Almost surely, 2^145024040 is an apocalyptic number.

145024040 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 145024040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187704000).

145024040 is an abundant number, since it is smaller than the sum of its proper divisors (230383960).

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

145024040 is a wasteful number, since it uses less digits than its factorization.

145024040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3474 (or 3470 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 145024040 is about 12042.5927440896. The cubic root of 145024040 is about 525.3878192662.

Adding to 145024040 its reverse (40420541), we get a palindrome (185444581).

The spelling of 145024040 in words is "one hundred forty-five million, twenty-four thousand, forty".