405321124252 has 24 divisors (see below), whose sum is σ = 780642625392. Its totient is φ = 182606457600.

The previous prime is 405321124183. The next prime is 405321124253. The reversal of 405321124252 is 252421123504.

It is a happy number.

It is a super-3 number, since 3×405321124252³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405321124253) 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, 40755399 + ... + 40765342.

It is an arithmetic number, because the mean of its divisors is an integer number (32526776058).

Almost surely, 2^405321124252 is an apocalyptic number.

It is an amenable number.

405321124252 is a deficient number, since it is larger than the sum of its proper divisors (375321501140).

405321124252 is a wasteful number, since it uses less digits than its factorization.

405321124252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81520869 (or 81520867 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 405321124252 its reverse (252421123504), we get a palindrome (657742247756).

The spelling of 405321124252 in words is "four hundred five billion, three hundred twenty-one million, one hundred twenty-four thousand, two hundred fifty-two".