405143023 has 8 divisors (see below), whose sum is σ = 426926720. Its totient is φ = 383405400.

The previous prime is 405143009. The next prime is 405143059. The reversal of 405143023 is 320341504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405143023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 405142985 and 405143003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405143423) 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 7 ways as a sum of consecutive naturals, for example, 7348 + ... + 29398.

It is an arithmetic number, because the mean of its divisors is an integer number (53365840).

Almost surely, 2^405143023 is an apocalyptic number.

405143023 is a deficient number, since it is larger than the sum of its proper divisors (21783697).

405143023 is a wasteful number, since it uses less digits than its factorization.

405143023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23037.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 405143023 is about 20128.1649188395. The cubic root of 405143023 is about 739.9507046539.

Adding to 405143023 its reverse (320341504), we get a palindrome (725484527).

It can be divided in two parts, 4051 and 43023, that added together give a palindrome (47074).

The spelling of 405143023 in words is "four hundred five million, one hundred forty-three thousand, twenty-three".