405042620452124 has 12 divisors (see below), whose sum is σ = 725308878484344. Its totient is φ = 197811512313744.

The previous prime is 405042620452103. The next prime is 405042620452177. The reversal of 405042620452124 is 421254026240504.

It is a happy number.

It is a super-2 number, since 2×405042620452124² (a number of 30 digits) contains 22 as substring.

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, 1177449477887 + ... + 1177449478230.

It is an arithmetic number, because the mean of its divisors is an integer number (60442406540362).

Almost surely, 2^{405042620452124} is an apocalyptic number.

It is an amenable number.

405042620452124 is a deficient number, since it is larger than the sum of its proper divisors (320266258032220).

405042620452124 is a wasteful number, since it uses less digits than its factorization.

405042620452124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2354898956164 (or 2354898956162 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 41.

Adding to 405042620452124 its reverse (421254026240504), we get a palindrome (826296646692628).

The spelling of 405042620452124 in words is "four hundred five trillion, forty-two billion, six hundred twenty million, four hundred fifty-two thousand, one hundred twenty-four".