405315442 has 16 divisors (see below), whose sum is σ = 695457792. Its totient is φ = 173548800.

The previous prime is 405315431. The next prime is 405315457. The reversal of 405315442 is 244513504.

It is a self number, because there is not a number n which added to its sum of digits gives 405315442.

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, 3538 + ... + 28690.

It is an arithmetic number, because the mean of its divisors is an integer number (43466112).

Almost surely, 2^405315442 is an apocalyptic number.

405315442 is a deficient number, since it is larger than the sum of its proper divisors (290142350).

405315442 is a wasteful number, since it uses less digits than its factorization.

405315442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26313.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 405315442 is about 20132.4474915496. The cubic root of 405315442 is about 740.0556580976.

Adding to 405315442 its reverse (244513504), we get a palindrome (649828946).

The spelling of 405315442 in words is "four hundred five million, three hundred fifteen thousand, four hundred forty-two".