402212402340 has 192 divisors, whose sum is σ = 1320888791040. Its totient is φ = 89548623360.

The previous prime is 402212402329. The next prime is 402212402341. The reversal of 402212402340 is 43204212204.

It is a super-2 number, since 2×402212402340² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 402212402340.

It is not an unprimeable number, because it can be changed into a prime (402212402341) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2562651 + ... + 2715069.

It is an arithmetic number, because the mean of its divisors is an integer number (6879629120).

Almost surely, 2^402212402340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402212402340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (660444395520).

402212402340 is an abundant number, since it is smaller than the sum of its proper divisors (918676388700).

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

402212402340 is a wasteful number, since it uses less digits than its factorization.

402212402340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152602 (or 152600 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 402212402340 its reverse (43204212204), we get a palindrome (445416614544).

The spelling of 402212402340 in words is "four hundred two billion, two hundred twelve million, four hundred two thousand, three hundred forty".