145021043 has 4 divisors (see below), whose sum is σ = 145556448. Its totient is φ = 144485640.

The previous prime is 145021039. The next prime is 145021073. The reversal of 145021043 is 340120541.

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 145021043 - 2² = 145021039 is a prime.

It is a super-2 number, since 2×145021043² = 42062205825615698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145021073) 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, 267296 + ... + 267837.

It is an arithmetic number, because the mean of its divisors is an integer number (36389112).

Almost surely, 2^145021043 is an apocalyptic number.

145021043 is a deficient number, since it is larger than the sum of its proper divisors (535405).

145021043 is an equidigital number, since it uses as much as digits as its factorization.

145021043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535404.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 145021043 is about 12042.4683101099. The cubic root of 145021043 is about 525.3842001004.

Adding to 145021043 its reverse (340120541), we get a palindrome (485141584).

The spelling of 145021043 in words is "one hundred forty-five million, twenty-one thousand, forty-three".