405243124 has 48 divisors (see below), whose sum is σ = 837095616. Its totient is φ = 169228800.

The previous prime is 405243121. The next prime is 405243151. The reversal of 405243124 is 421342504.

It is a happy number.

It is a super-3 number, since 3×405243124³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405243121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128284 + ... + 131404.

It is an arithmetic number, because the mean of its divisors is an integer number (17439492).

Almost surely, 2^405243124 is an apocalyptic number.

405243124 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

405243124 is an abundant number, since it is smaller than the sum of its proper divisors (431852492).

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

405243124 is a wasteful number, since it uses less digits than its factorization.

405243124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3376 (or 3374 counting only the distinct ones).

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

The square root of 405243124 is about 20130.6513555821. The cubic root of 405243124 is about 740.0116409174.

Adding to 405243124 its reverse (421342504), we get a palindrome (826585628).

The spelling of 405243124 in words is "four hundred five million, two hundred forty-three thousand, one hundred twenty-four".