145320043 has 4 divisors (see below), whose sum is σ = 158530968. Its totient is φ = 132109120.

The previous prime is 145320041. The next prime is 145320047. The reversal of 145320043 is 340023541.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 145320043 - 2¹ = 145320041 is a prime.

It is a super-2 number, since 2×145320043² = 42235829795043698, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145319996 and 145320023.

It is not an unprimeable number, because it can be changed into a prime (145320041) 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 3 ways as a sum of consecutive naturals, for example, 6605446 + ... + 6605467.

It is an arithmetic number, because the mean of its divisors is an integer number (39632742).

Almost surely, 2^145320043 is an apocalyptic number.

145320043 is a deficient number, since it is larger than the sum of its proper divisors (13210925).

145320043 is a wasteful number, since it uses less digits than its factorization.

145320043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13210924.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 145320043 is about 12054.8763162465. The cubic root of 145320043 is about 525.7450259847.

Adding to 145320043 its reverse (340023541), we get a palindrome (485343584).

The spelling of 145320043 in words is "one hundred forty-five million, three hundred twenty thousand, forty-three".