4128623 has 2 divisors, whose sum is σ = 4128624. Its totient is φ = 4128622.

The previous prime is 4128617. The next prime is 4128689. The reversal of 4128623 is 3268214.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4128623 - 2⁸ = 4128367 is a prime.

It is a super-2 number, since 2×4128623² = 34091055752258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4128592 and 4128601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4128613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2064311 + 2064312.

It is an arithmetic number, because the mean of its divisors is an integer number (2064312).

Almost surely, 2^4128623 is an apocalyptic number.

4128623 is a deficient number, since it is larger than the sum of its proper divisors (1).

4128623 is an equidigital number, since it uses as much as digits as its factorization.

4128623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 26.

The square root of 4128623 is about 2031.9013263444. The cubic root of 4128623 is about 160.4236558788.

The spelling of 4128623 in words is "four million, one hundred twenty-eight thousand, six hundred twenty-three".