405425352123 has 24 divisors (see below), whose sum is σ = 653709101760. Its totient is φ = 239998091760.

The previous prime is 405425352103. The next prime is 405425352139. The reversal of 405425352123 is 321253524504.

405425352123 is a `hidden beast` number, since 4 + 0 + 542 + 53 + 52 + 12 + 3 = 666.

It is not a de Polignac number, because 405425352123 - 2¹⁰ = 405425351099 is a prime.

It is a super-2 number, since 2×405425352123² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (405425352103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47614413 + ... + 47622926.

It is an arithmetic number, because the mean of its divisors is an integer number (27237879240).

Almost surely, 2^405425352123 is an apocalyptic number.

405425352123 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

405425352123 is a deficient number, since it is larger than the sum of its proper divisors (248283749637).

405425352123 is a wasteful number, since it uses less digits than its factorization.

405425352123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95237399 (or 95237396 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 405425352123 its reverse (321253524504), we get a palindrome (726678876627).

The spelling of 405425352123 in words is "four hundred five billion, four hundred twenty-five million, three hundred fifty-two thousand, one hundred twenty-three".