402143312212 has 6 divisors (see below), whose sum is σ = 703750796378. Its totient is φ = 201071656104.

The previous prime is 402143312191. The next prime is 402143312227. The reversal of 402143312212 is 212213341204.

It can be written as a sum of positive squares in only one way, i.e., 231595787536 + 170547524676 = 481244^2 + 412974^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50267914023 + ... + 50267914030.

Almost surely, 2^402143312212 is an apocalyptic number.

It is an amenable number.

402143312212 is a deficient number, since it is larger than the sum of its proper divisors (301607484166).

402143312212 is a wasteful number, since it uses less digits than its factorization.

402143312212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100535828057 (or 100535828055 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 402143312212 its reverse (212213341204), we get a palindrome (614356653416).

The spelling of 402143312212 in words is "four hundred two billion, one hundred forty-three million, three hundred twelve thousand, two hundred twelve".