403993242 has 48 divisors (see below), whose sum is σ = 904206888. Its totient is φ = 130291200.

The previous prime is 403993231. The next prime is 403993243. The reversal of 403993242 is 242399304.

403993242 is a `hidden beast` number, since 403 + 9 + 9 + 3 + 242 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 401240961 + 2752281 = 20031^2 + 1659^2 .

It is a junction number, because it is equal to n+sod(n) for n = 403993197 and 403993206.

It is not an unprimeable number, because it can be changed into a prime (403993243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66742 + ... + 72542.

Almost surely, 2^403993242 is an apocalyptic number.

403993242 is an abundant number, since it is smaller than the sum of its proper divisors (500213646).

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

403993242 is a wasteful number, since it uses less digits than its factorization.

403993242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5935 (or 5932 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 403993242 is about 20099.5831300055. The cubic root of 403993242 is about 739.2500571354.

The spelling of 403993242 in words is "four hundred three million, nine hundred ninety-three thousand, two hundred forty-two".