405042050 has 24 divisors (see below), whose sum is σ = 861004416. Its totient is φ = 138871440.

The previous prime is 405041933. The next prime is 405042061. The reversal of 405042050 is 50240504.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 578282 + ... + 578981.

It is an arithmetic number, because the mean of its divisors is an integer number (35875184).

Almost surely, 2^405042050 is an apocalyptic number.

405042050 is an abundant number, since it is smaller than the sum of its proper divisors (455962366).

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

405042050 is a wasteful number, since it uses less digits than its factorization.

405042050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157282 (or 1157277 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 405042050 is about 20125.6565110309. The cubic root of 405042050 is about 739.8892273927.

Adding to 405042050 its reverse (50240504), we get a palindrome (455282554).

It can be divided in two parts, 4050 and 42050, that multiplied together give a square (170302500 = 13050²).

The spelling of 405042050 in words is "four hundred five million, forty-two thousand, fifty".