145123423 has 4 divisors (see below), whose sum is σ = 145371240. Its totient is φ = 144875608.

The previous prime is 145123417. The next prime is 145123427. The reversal of 145123423 is 324321541.

145123423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324321541 = 691 ⋅469351.

It is a cyclic number.

It is not a de Polignac number, because 145123423 - 2⁹ = 145122911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145123427) 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, 123028 + ... + 124201.

It is an arithmetic number, because the mean of its divisors is an integer number (36342810).

Almost surely, 2^145123423 is an apocalyptic number.

145123423 is a deficient number, since it is larger than the sum of its proper divisors (247817).

145123423 is an equidigital number, since it uses as much as digits as its factorization.

145123423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247816.

The product of its digits is 2880, while the sum is 25.

The square root of 145123423 is about 12046.7183498246. The cubic root of 145123423 is about 525.5078055683.

Adding to 145123423 its reverse (324321541), we get a palindrome (469444964).

The spelling of 145123423 in words is "one hundred forty-five million, one hundred twenty-three thousand, four hundred twenty-three".