405241723 has 4 divisors (see below), whose sum is σ = 416194240. Its totient is φ = 394289208.

The previous prime is 405241721. The next prime is 405241729. The reversal of 405241723 is 327142504.

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

It is a cyclic number.

It is not a de Polignac number, because 405241723 - 2¹ = 405241721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 405241691 and 405241700.

It is not an unprimeable number, because it can be changed into a prime (405241721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5476203 + ... + 5476276.

It is an arithmetic number, because the mean of its divisors is an integer number (104048560).

Almost surely, 2^405241723 is an apocalyptic number.

405241723 is a deficient number, since it is larger than the sum of its proper divisors (10952517).

405241723 is a wasteful number, since it uses less digits than its factorization.

405241723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10952516.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 405241723 is about 20130.6165578703. The cubic root of 405241723 is about 740.0107881310.

The spelling of 405241723 in words is "four hundred five million, two hundred forty-one thousand, seven hundred twenty-three".