403993042 has 16 divisors (see below), whose sum is σ = 609460992. Its totient is φ = 200843280.

The previous prime is 403993039. The next prime is 403993061. The reversal of 403993042 is 240399304.

It is a junction number, because it is equal to n+sod(n) for n = 403992989 and 403993007.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407167 + ... + 408157.

It is an arithmetic number, because the mean of its divisors is an integer number (38091312).

Almost surely, 2^403993042 is an apocalyptic number.

403993042 is a deficient number, since it is larger than the sum of its proper divisors (205467950).

403993042 is a wasteful number, since it uses less digits than its factorization.

403993042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 403993042 is about 20099.5781547773. The cubic root of 403993042 is about 739.2499351449.

The spelling of 403993042 in words is "four hundred three million, nine hundred ninety-three thousand, forty-two".