403212042 has 12 divisors (see below), whose sum is σ = 873626130. Its totient is φ = 134404008.

The previous prime is 403212031. The next prime is 403212067. The reversal of 403212042 is 240212304.

It can be written as a sum of positive squares in only one way, i.e., 399560121 + 3651921 = 19989^2 + 1911^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 22400669 = 403212042 / (4 + 0 + 3 + 2 + 1 + 2 + 0 + 4 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11200317 + ... + 11200352.

Almost surely, 2^403212042 is an apocalyptic number.

403212042 is an abundant number, since it is smaller than the sum of its proper divisors (470414088).

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

403212042 is a wasteful number, since it uses less digits than its factorization.

403212042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22400677 (or 22400674 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 403212042 is about 20080.1404875564. The cubic root of 403212042 is about 738.7732547843.

Adding to 403212042 its reverse (240212304), we get a palindrome (643424346).

The spelling of 403212042 in words is "four hundred three million, two hundred twelve thousand, forty-two".