402440200120 has 128 divisors (see below), whose sum is σ = 1076449046400. Its totient is φ = 132485068800.

The previous prime is 402440200081. The next prime is 402440200121. The reversal of 402440200120 is 21002044204.

It is a super-2 number, since 2×402440200120² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402440200121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1332810 + ... + 1606630.

It is an arithmetic number, because the mean of its divisors is an integer number (8409758175).

Almost surely, 2^402440200120 is an apocalyptic number.

402440200120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402440200120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (538224523200).

402440200120 is an abundant number, since it is smaller than the sum of its proper divisors (674008846280).

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

402440200120 is a wasteful number, since it uses less digits than its factorization.

402440200120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274049 (or 274045 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 402440200120 its reverse (21002044204), we get a palindrome (423442244324).

The spelling of 402440200120 in words is "four hundred two billion, four hundred forty million, two hundred thousand, one hundred twenty".