145124423 has 4 divisors (see below), whose sum is σ = 149805888. Its totient is φ = 140442960.

The previous prime is 145124407. The next prime is 145124443. The reversal of 145124423 is 324421541.

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 145124423 - 2⁴ = 145124407 is a prime.

It is a super-2 number, since 2×145124423² = 42122196302165858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145124392 and 145124401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145124443) 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, 2340686 + ... + 2340747.

It is an arithmetic number, because the mean of its divisors is an integer number (37451472).

Almost surely, 2^145124423 is an apocalyptic number.

145124423 is a deficient number, since it is larger than the sum of its proper divisors (4681465).

145124423 is an equidigital number, since it uses as much as digits as its factorization.

145124423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4681464.

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

The square root of 145124423 is about 12046.7598548323. The cubic root of 145124423 is about 525.5090126021.

Adding to 145124423 its reverse (324421541), we get a palindrome (469545964).

The spelling of 145124423 in words is "one hundred forty-five million, one hundred twenty-four thousand, four hundred twenty-three".