145020043 has 4 divisors (see below), whose sum is σ = 165737200. Its totient is φ = 124302888.

The previous prime is 145020017. The next prime is 145020049. The reversal of 145020043 is 340020541.

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

It is a cyclic number.

It is not a de Polignac number, because 145020043 - 2⁵ = 145020011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145020043.

It is not an unprimeable number, because it can be changed into a prime (145020049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10358568 + ... + 10358581.

It is an arithmetic number, because the mean of its divisors is an integer number (41434300).

Almost surely, 2^145020043 is an apocalyptic number.

145020043 is a deficient number, since it is larger than the sum of its proper divisors (20717157).

145020043 is an equidigital number, since it uses as much as digits as its factorization.

145020043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20717156.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 145020043 is about 12042.4267903110. The cubic root of 145020043 is about 525.3829924931.

Adding to 145020043 its reverse (340020541), we get a palindrome (485040584).

The spelling of 145020043 in words is "one hundred forty-five million, twenty thousand, forty-three".