145440024 has 32 divisors (see below), whose sum is σ = 364326720. Its totient is φ = 48383136.

The previous prime is 145440023. The next prime is 145440047. The reversal of 145440024 is 420044541.

It is a happy number.

It is a super-2 number, since 2×145440024² = 42305601162241152, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 145439976 and 145440003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145440023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6759 + ... + 18345.

It is an arithmetic number, because the mean of its divisors is an integer number (11385210).

Almost surely, 2^145440024 is an apocalyptic number.

It is an amenable number.

145440024 is an abundant number, since it is smaller than the sum of its proper divisors (218886696).

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

145440024 is a wasteful number, since it uses less digits than its factorization.

145440024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12119 (or 12115 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 145440024 is about 12059.8517403822. The cubic root of 145440024 is about 525.8896769690.

Adding to 145440024 its reverse (420044541), we get a palindrome (565484565).

The spelling of 145440024 in words is "one hundred forty-five million, four hundred forty thousand, twenty-four".