405423124 has 12 divisors (see below), whose sum is σ = 717462900. Its totient is φ = 200433728.

The previous prime is 405423113. The next prime is 405423169. The reversal of 405423124 is 421324504.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 183115024 + 222308100 = 13532^2 + 14910^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569059 + ... + 569770.

It is an arithmetic number, because the mean of its divisors is an integer number (59788575).

Almost surely, 2^405423124 is an apocalyptic number.

It is an amenable number.

405423124 is a deficient number, since it is larger than the sum of its proper divisors (312039776).

405423124 is a wasteful number, since it uses less digits than its factorization.

405423124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138922 (or 1138920 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 405423124 is about 20135.1216534691. The cubic root of 405423124 is about 740.1211902806.

Adding to 405423124 its reverse (421324504), we get a palindrome (826747628).

The spelling of 405423124 in words is "four hundred five million, four hundred twenty-three thousand, one hundred twenty-four".