405045041 has 4 divisors (see below), whose sum is σ = 405931812. Its totient is φ = 404158272.

The previous prime is 405044987. The next prime is 405045061. The reversal of 405045041 is 140540504.

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 362521600 + 42523441 = 19040^2 + 6521^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405045041 is a prime.

It is a super-2 number, since 2×405045041² = 328122970477383362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 405044998 and 405045016.

It is not an unprimeable number, because it can be changed into a prime (405045061) 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, 442700 + ... + 443613.

It is an arithmetic number, because the mean of its divisors is an integer number (101482953).

Almost surely, 2^405045041 is an apocalyptic number.

It is an amenable number.

405045041 is a deficient number, since it is larger than the sum of its proper divisors (886771).

405045041 is an equidigital number, since it uses as much as digits as its factorization.

405045041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886770.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 405045041 is about 20125.7308190287. The cubic root of 405045041 is about 739.8910486054.

Adding to 405045041 its reverse (140540504), we get a palindrome (545585545).

The spelling of 405045041 in words is "four hundred five million, forty-five thousand, forty-one".