404123434 has 32 divisors (see below), whose sum is σ = 714821184.
Its totient is φ = 168929280.
The previous prime is 404123393. The next prime is 404123449. The reversal of 404123434 is 434321404.
It is a junction number, because it is equal to n+sod(n) for n = 404123399 and 404123408.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78442 + ... + 83434.
It is an arithmetic number, because the mean of its divisors is an integer number (22338162).
Almost surely, 2404123434 is an apocalyptic number.
404123434 is a deficient number, since it is larger than the sum of its proper divisors (310697750).
404123434 is a wasteful number, since it uses less digits than its factorization.
404123434 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5302.
The product of its (nonzero) digits is 4608, while the sum is 25.
The square root of 404123434 is about 20102.8215432561.
The cubic root of 404123434 is about 739.3294595417.
Adding to 404123434 its reverse (434321404), we get a palindrome (838444838).
The spelling of 404123434 in words is "four hundred four million, one hundred twenty-three thousand, four hundred thirty-four".