145430023 has 4 divisors (see below), whose sum is σ = 145569448. Its totient is φ = 145290600.

The previous prime is 145430011. The next prime is 145430059. The reversal of 145430023 is 320034541.

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 145430023 - 2¹³ = 145421831 is a prime.

It is a super-2 number, since 2×145430023² = 42299783179561058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145429976 and 145430003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145430323) 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, 68136 + ... + 70237.

It is an arithmetic number, because the mean of its divisors is an integer number (36392362).

Almost surely, 2^145430023 is an apocalyptic number.

145430023 is a deficient number, since it is larger than the sum of its proper divisors (139425).

145430023 is a wasteful number, since it uses less digits than its factorization.

145430023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139424.

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

The square root of 145430023 is about 12059.4370929990. The cubic root of 145430023 is about 525.8776226457.

Adding to 145430023 its reverse (320034541), we get a palindrome (465464564).

The spelling of 145430023 in words is "one hundred forty-five million, four hundred thirty thousand, twenty-three".