145424241 has 20 divisors (see below), whose sum is σ = 224733300. Its totient is φ = 93604896.

The previous prime is 145424219. The next prime is 145424263. The reversal of 145424241 is 142424541.

It is an interprime number because it is at equal distance from previous prime (145424219) and next prime (145424263).

It can be written as a sum of positive squares in 2 ways, for example, as 111830625 + 33593616 = 10575^2 + 5796^2 .

It is not a de Polignac number, because 145424241 - 2⁶ = 145424177 is a prime.

It is a super-2 number, since 2×145424241² = 42296419740852162, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (145424641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28606 + ... + 33303.

It is an arithmetic number, because the mean of its divisors is an integer number (11236665).

Almost surely, 2^145424241 is an apocalyptic number.

It is an amenable number.

145424241 is a deficient number, since it is larger than the sum of its proper divisors (79309059).

145424241 is an equidigital number, since it uses as much as digits as its factorization.

145424241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61950 (or 61941 counting only the distinct ones).

The product of its digits is 5120, while the sum is 27.

The square root of 145424241 is about 12059.1973613504. The cubic root of 145424241 is about 525.8706532808.

Adding to 145424241 its reverse (142424541), we get a palindrome (287848782).

The spelling of 145424241 in words is "one hundred forty-five million, four hundred twenty-four thousand, two hundred forty-one".