403442013 has 16 divisors (see below), whose sum is σ = 582253056. Its totient is φ = 247007040.

The previous prime is 403442003. The next prime is 403442021. The reversal of 403442013 is 310244304.

It is not a de Polignac number, because 403442013 - 2⁶ = 403441949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403442003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18573 + ... + 33938.

It is an arithmetic number, because the mean of its divisors is an integer number (36390816).

Almost surely, 2^403442013 is an apocalyptic number.

It is an amenable number.

403442013 is a deficient number, since it is larger than the sum of its proper divisors (178811043).

403442013 is a wasteful number, since it uses less digits than its factorization.

403442013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52724.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 403442013 is about 20085.8660007479. The cubic root of 403442013 is about 738.9136805956.

Adding to 403442013 its reverse (310244304), we get a palindrome (713686317).

The spelling of 403442013 in words is "four hundred three million, four hundred forty-two thousand, thirteen".