145404023 has 2 divisors, whose sum is σ = 145404024. Its totient is φ = 145404022.

The previous prime is 145404019. The next prime is 145404031. The reversal of 145404023 is 320404541.

145404023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145404023 - 2² = 145404019 is a prime.

It is a super-2 number, since 2×145404023² = 42284659809169058, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145404023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145404013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72702011 + 72702012.

It is an arithmetic number, because the mean of its divisors is an integer number (72702012).

Almost surely, 2^145404023 is an apocalyptic number.

145404023 is a deficient number, since it is larger than the sum of its proper divisors (1).

145404023 is an equidigital number, since it uses as much as digits as its factorization.

145404023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 145404023 is about 12058.3590508825. The cubic root of 145404023 is about 525.8462819528.

Adding to 145404023 its reverse (320404541), we get a palindrome (465808564).

The spelling of 145404023 in words is "one hundred forty-five million, four hundred four thousand, twenty-three".