405315042 has 16 divisors (see below), whose sum is σ = 884323872. Its totient is φ = 122822720.

The previous prime is 405315019. The next prime is 405315061. The reversal of 405315042 is 240513504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3070503 + ... + 3070634.

It is an arithmetic number, because the mean of its divisors is an integer number (55270242).

Almost surely, 2^405315042 is an apocalyptic number.

405315042 is an abundant number, since it is smaller than the sum of its proper divisors (479008830).

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

405315042 is a wasteful number, since it uses less digits than its factorization.

405315042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6141153.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 405315042 is about 20132.4375573352. The cubic root of 405315042 is about 740.0554146474.

Adding to 405315042 its reverse (240513504), we get a palindrome (645828546).

It can be divided in two parts, 40531504 and 2, that added together give a triangular number (40531506 = T₉₀₀₃).

The spelling of 405315042 in words is "four hundred five million, three hundred fifteen thousand, forty-two".