201402210640 has 40 divisors (see below), whose sum is σ = 479681126568. Its totient is φ = 78595983360.

The previous prime is 201402210623. The next prime is 201402210641. The reversal of 201402210640 is 46012204102.

It is a happy number.

201402210640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 24215094544 + 177187116096 = 155612^2 + 420936^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201402210641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30698277 + ... + 30704836.

Almost surely, 2^201402210640 is an apocalyptic number.

201402210640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201402210640 is an abundant number, since it is smaller than the sum of its proper divisors (278278915928).

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

201402210640 is a wasteful number, since it uses less digits than its factorization.

201402210640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61403167 (or 61403161 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 201402210640 its reverse (46012204102), we get a palindrome (247414414742).

The spelling of 201402210640 in words is "two hundred one billion, four hundred two million, two hundred ten thousand, six hundred forty".