405499642 has 8 divisors (see below), whose sum is σ = 608526432. Its totient is φ = 202657500.

The previous prime is 405499609. The next prime is 405499649. The reversal of 405499642 is 246994504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (405499649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40534 + ... + 49537.

It is an arithmetic number, because the mean of its divisors is an integer number (76065804).

Almost surely, 2^405499642 is an apocalyptic number.

405499642 is a deficient number, since it is larger than the sum of its proper divisors (203026790).

405499642 is a wasteful number, since it uses less digits than its factorization.

405499642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92324.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 405499642 is about 20137.0216765042. The cubic root of 405499642 is about 740.1677498931.

The spelling of 405499642 in words is "four hundred five million, four hundred ninety-nine thousand, six hundred forty-two".