405245023 has 8 divisors (see below), whose sum is σ = 407102976. Its totient is φ = 403392000.

The previous prime is 405244969. The next prime is 405245047. The reversal of 405245023 is 320542504.

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

It is a cyclic number.

It is not a de Polignac number, because 405245023 - 2²⁵ = 371690591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405245083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336823 + ... + 338023.

It is an arithmetic number, because the mean of its divisors is an integer number (50887872).

Almost surely, 2^405245023 is an apocalyptic number.

405245023 is a deficient number, since it is larger than the sum of its proper divisors (1857953).

405245023 is a wasteful number, since it uses less digits than its factorization.

405245023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2465.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 405245023 is about 20130.6985224060. The cubic root of 405245023 is about 740.0127968325.

Adding to 405245023 its reverse (320542504), we get a palindrome (725787527).

The spelling of 405245023 in words is "four hundred five million, two hundred forty-five thousand, twenty-three".