405243052 has 12 divisors (see below), whose sum is σ = 709324000. Its totient is φ = 202579056.

The previous prime is 405243043. The next prime is 405243107. The reversal of 405243052 is 250342504.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21949 + ... + 35947.

Almost surely, 2^405243052 is an apocalyptic number.

It is an amenable number.

405243052 is a deficient number, since it is larger than the sum of its proper divisors (304080948).

405243052 is a wasteful number, since it uses less digits than its factorization.

405243052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21240 (or 21238 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 405243052 is about 20130.6495672643. The cubic root of 405243052 is about 740.0115970912.

Adding to 405243052 its reverse (250342504), we get a palindrome (655585556).

The spelling of 405243052 in words is "four hundred five million, two hundred forty-three thousand, fifty-two".