402242231132240 has 20 divisors (see below), whose sum is σ = 935213187382644. Its totient is φ = 160896892452864.

The previous prime is 402242231132239. The next prime is 402242231132243. The reversal of 402242231132240 is 42231132242204.

It can be written as a sum of positive squares in 2 ways, for example, as 102915830825536 + 299326400306704 = 10144744^2 + 17301052^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 402242231132197 and 402242231132206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402242231132243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2514013944497 + ... + 2514013944656.

Almost surely, 2^{402242231132240} is an apocalyptic number.

402242231132240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402242231132240 is an abundant number, since it is smaller than the sum of its proper divisors (532970956250404).

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

402242231132240 is a wasteful number, since it uses less digits than its factorization.

402242231132240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5028027889166 (or 5028027889160 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 402242231132240 its reverse (42231132242204), we get a palindrome (444473363374444).

The spelling of 402242231132240 in words is "four hundred two trillion, two hundred forty-two billion, two hundred thirty-one million, one hundred thirty-two thousand, two hundred forty".