404242230 has 32 divisors (see below), whose sum is σ = 1108779264. Its totient is φ = 92398176.

The previous prime is 404242219. The next prime is 404242243. The reversal of 404242230 is 32242404.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 404242197 and 404242206.

It is a congruent number.

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, 962272 + ... + 962691.

It is an arithmetic number, because the mean of its divisors is an integer number (34649352).

Almost surely, 2^404242230 is an apocalyptic number.

404242230 is an abundant number, since it is smaller than the sum of its proper divisors (704537034).

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

404242230 is a wasteful number, since it uses less digits than its factorization.

404242230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924980.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 404242230 is about 20105.7760357565. The cubic root of 404242230 is about 739.4018967976.

Adding to 404242230 its reverse (32242404), we get a palindrome (436484634).

The spelling of 404242230 in words is "four hundred four million, two hundred forty-two thousand, two hundred thirty".