405342024 has 16 divisors (see below), whose sum is σ = 1013355120. Its totient is φ = 135114000.

The previous prime is 405342023. The next prime is 405342071. The reversal of 405342024 is 420243504.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 16889251 = 405342024 / (4 + 0 + 5 + 3 + 4 + 2 + 0 + 2 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 405341985 and 405342003.

It is not an unprimeable number, because it can be changed into a prime (405342023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8444602 + ... + 8444649.

It is an arithmetic number, because the mean of its divisors is an integer number (63334695).

Almost surely, 2^405342024 is an apocalyptic number.

It is an amenable number.

405342024 is an abundant number, since it is smaller than the sum of its proper divisors (608013096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405342024 is a wasteful number, since it uses less digits than its factorization.

405342024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16889260 (or 16889256 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 405342024 is about 20133.1076587794. The cubic root of 405342024 is about 740.0718362207.

Adding to 405342024 its reverse (420243504), we get a palindrome (825585528).

The spelling of 405342024 in words is "four hundred five million, three hundred forty-two thousand, twenty-four".