405134242 has 16 divisors (see below), whose sum is σ = 645495480. Its totient is φ = 190044928.

The previous prime is 405134227. The next prime is 405134281. The reversal of 405134242 is 242431504.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 334926601 + 70207641 = 18301^2 + 8379^2 .

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, 8017 + ... + 29572.

Almost surely, 2^405134242 is an apocalyptic number.

405134242 is a deficient number, since it is larger than the sum of its proper divisors (240361238).

405134242 is a wasteful number, since it uses less digits than its factorization.

405134242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37925.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 405134242 is about 20127.9467904702. The cubic root of 405134242 is about 739.9453587606.

Adding to 405134242 its reverse (242431504), we get a palindrome (647565746).

The spelling of 405134242 in words is "four hundred five million, one hundred thirty-four thousand, two hundred forty-two".