145021423 has 2 divisors, whose sum is σ = 145021424. Its totient is φ = 145021422.

The previous prime is 145021421. The next prime is 145021451. The reversal of 145021423 is 324120541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145021423 - 2¹ = 145021421 is a prime.

Together with 145021421, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 145021394 and 145021403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145021421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72510711 + 72510712.

It is an arithmetic number, because the mean of its divisors is an integer number (72510712).

Almost surely, 2^145021423 is an apocalyptic number.

145021423 is a deficient number, since it is larger than the sum of its proper divisors (1).

145021423 is an equidigital number, since it uses as much as digits as its factorization.

145021423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 145021423 is about 12042.4840875959. The cubic root of 145021423 is about 525.3846589897.

Adding to 145021423 its reverse (324120541), we get a palindrome (469141964).

The spelling of 145021423 in words is "one hundred forty-five million, twenty-one thousand, four hundred twenty-three".