402213213240 has 32 divisors (see below), whose sum is σ = 1206639640080. Its totient is φ = 107256856832.

The previous prime is 402213213239. The next prime is 402213213289. The reversal of 402213213240 is 42312312204.

It is a happy number.

It is a super-2 number, since 2×402213213240² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 402213213240.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1675888269 + ... + 1675888508.

Almost surely, 2^402213213240 is an apocalyptic number.

402213213240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402213213240 is an abundant number, since it is smaller than the sum of its proper divisors (804426426840).

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

402213213240 is a wasteful number, since it uses less digits than its factorization.

402213213240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3351776791 (or 3351776787 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 402213213240 its reverse (42312312204), we get a palindrome (444525525444).

The spelling of 402213213240 in words is "four hundred two billion, two hundred thirteen million, two hundred thirteen thousand, two hundred forty".