423021843 has 12 divisors (see below), whose sum is σ = 614135808. Its totient is φ = 280581840.

The previous prime is 423021821. The next prime is 423021847. The reversal of 423021843 is 348120324.

It is not a de Polignac number, because 423021843 - 2¹² = 423017747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423021847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117523 + ... + 121068.

It is an arithmetic number, because the mean of its divisors is an integer number (51177984).

Almost surely, 2^423021843 is an apocalyptic number.

423021843 is a deficient number, since it is larger than the sum of its proper divisors (191113965).

423021843 is a wasteful number, since it uses less digits than its factorization.

423021843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238794 (or 238791 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 423021843 is about 20567.4948158496. The cubic root of 423021843 is about 750.6789957675.

The spelling of 423021843 in words is "four hundred twenty-three million, twenty-one thousand, eight hundred forty-three".