405540230120 has 32 divisors (see below), whose sum is σ = 937126751400. Its totient is φ = 157831872768.

The previous prime is 405540230119. The next prime is 405540230129. The reversal of 405540230120 is 21032045504.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 400519373956 + 5020856164 = 632866^2 + 70858^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 405540230120.

It is not an unprimeable number, because it can be changed into a prime (405540230129) 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, 137005355 + ... + 137008314.

Almost surely, 2^405540230120 is an apocalyptic number.

405540230120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

405540230120 is an abundant number, since it is smaller than the sum of its proper divisors (531586521280).

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

405540230120 is a wasteful number, since it uses less digits than its factorization.

405540230120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274013717 (or 274013713 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 405540230120 its reverse (21032045504), we get a palindrome (426572275624).

The spelling of 405540230120 in words is "four hundred five billion, five hundred forty million, two hundred thirty thousand, one hundred twenty".