402442220140 has 48 divisors (see below), whose sum is σ = 854033463360. Its totient is φ = 159284724480.

The previous prime is 402442220123. The next prime is 402442220143. The reversal of 402442220140 is 41022244204.

It is not an unprimeable number, because it can be changed into a prime (402442220143) 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 15 ways as a sum of consecutive naturals, for example, 1495510 + ... + 1743970.

It is an arithmetic number, because the mean of its divisors is an integer number (17792363820).

Almost surely, 2^402442220140 is an apocalyptic number.

It is an amenable number.

402442220140 is an abundant number, since it is smaller than the sum of its proper divisors (451591243220).

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

402442220140 is a wasteful number, since it uses less digits than its factorization.

402442220140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249322 (or 249320 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 402442220140 its reverse (41022244204), we get a palindrome (443464464344).

The spelling of 402442220140 in words is "four hundred two billion, four hundred forty-two million, two hundred twenty thousand, one hundred forty".