405011243 has 16 divisors (see below), whose sum is σ = 510638016. Its totient is φ = 312629760.

The previous prime is 405011219. The next prime is 405011251. The reversal of 405011243 is 342110504.

It is a cyclic number.

It is not a de Polignac number, because 405011243 - 2¹⁰ = 405010219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (405011273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50546 + ... + 58007.

It is an arithmetic number, because the mean of its divisors is an integer number (31914876).

Almost surely, 2^405011243 is an apocalyptic number.

405011243 is a deficient number, since it is larger than the sum of its proper divisors (105626773).

405011243 is a wasteful number, since it uses less digits than its factorization.

405011243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108614.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 405011243 is about 20124.8911301403. The cubic root of 405011243 is about 739.8704685623.

Adding to 405011243 its reverse (342110504), we get a palindrome (747121747).

The spelling of 405011243 in words is "four hundred five million, eleven thousand, two hundred forty-three".