145412243 has 4 divisors (see below), whose sum is σ = 145511520. Its totient is φ = 145312968.

The previous prime is 145412221. The next prime is 145412269. The reversal of 145412243 is 342214541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342214541 = 503 ⋅680347.

It is a cyclic number.

It is not a de Polignac number, because 145412243 - 2¹² = 145408147 is a prime.

It is a super-2 number, since 2×145412243² = 42289440828582098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145412273) 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, 47408 + ... + 50381.

It is an arithmetic number, because the mean of its divisors is an integer number (36377880).

Almost surely, 2^145412243 is an apocalyptic number.

145412243 is a deficient number, since it is larger than the sum of its proper divisors (99277).

145412243 is an equidigital number, since it uses as much as digits as its factorization.

145412243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99276.

The product of its digits is 3840, while the sum is 26.

The square root of 145412243 is about 12058.6998884623. The cubic root of 145412243 is about 525.8561908372.

Adding to 145412243 its reverse (342214541), we get a palindrome (487626784).

The spelling of 145412243 in words is "one hundred forty-five million, four hundred twelve thousand, two hundred forty-three".