210145423 has 2 divisors, whose sum is σ = 210145424. Its totient is φ = 210145422.

The previous prime is 210145421. The next prime is 210145447. The reversal of 210145423 is 324541012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210145423 - 2¹ = 210145421 is a prime.

It is a super-2 number, since 2×210145423² = 88322197615697858, which contains 22 as substring.

Together with 210145421, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 210145394 and 210145403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210145421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105072711 + 105072712.

It is an arithmetic number, because the mean of its divisors is an integer number (105072712).

Almost surely, 2^210145423 is an apocalyptic number.

210145423 is a deficient number, since it is larger than the sum of its proper divisors (1).

210145423 is an equidigital number, since it uses as much as digits as its factorization.

210145423 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 210145423 is about 14496.3934480270. The cubic root of 210145423 is about 594.5293672625.

Adding to 210145423 its reverse (324541012), we get a palindrome (534686435).

It can be divided in two parts, 2101 and 45423, that added together give a square (47524 = 218²).

The spelling of 210145423 in words is "two hundred ten million, one hundred forty-five thousand, four hundred twenty-three".