405442033 has 4 divisors (see below), whose sum is σ = 406590948. Its totient is φ = 404293120.

The previous prime is 405442031. The next prime is 405442111. The reversal of 405442033 is 330244504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 210337009 + 195105024 = 14503^2 + 13968^2 .

It is a cyclic number.

It is not a de Polignac number, because 405442033 - 2¹ = 405442031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 405441989 and 405442007.

It is not an unprimeable number, because it can be changed into a prime (405442031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 573928 + ... + 574633.

It is an arithmetic number, because the mean of its divisors is an integer number (101647737).

Almost surely, 2^405442033 is an apocalyptic number.

It is an amenable number.

405442033 is a deficient number, since it is larger than the sum of its proper divisors (1148915).

405442033 is a wasteful number, since it uses less digits than its factorization.

405442033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148914.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 405442033 is about 20135.5912006576. The cubic root of 405442033 is about 740.1326965590.

Adding to 405442033 its reverse (330244504), we get a palindrome (735686537).

The spelling of 405442033 in words is "four hundred five million, four hundred forty-two thousand, thirty-three".