423423100 has 72 divisors (see below), whose sum is σ = 964188288. Its totient is φ = 161092800.

The previous prime is 423423073. The next prime is 423423101. The reversal of 423423100 is 1324324.

It is a super-2 number, since 2×423423100² = 358574243227220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423423101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 521695 + ... + 522505.

It is an arithmetic number, because the mean of its divisors is an integer number (13391504).

Almost surely, 2^423423100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423423100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (482094144).

423423100 is an abundant number, since it is smaller than the sum of its proper divisors (540765188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423423100 is a wasteful number, since it uses less digits than its factorization.

423423100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075 (or 1068 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 423423100 is about 20577.2471433863. The cubic root of 423423100 is about 750.9162727291.

Adding to 423423100 its reverse (1324324), we get a palindrome (424747424).

The spelling of 423423100 in words is "four hundred twenty-three million, four hundred twenty-three thousand, one hundred".