402200620840 has 64 divisors (see below), whose sum is σ = 932382556560. Its totient is φ = 156048967680.

The previous prime is 402200620837. The next prime is 402200620903. The reversal of 402200620840 is 48026002204.

It can be written as a sum of positive squares in 8 ways, for example, as 256629375396 + 145571245444 = 506586^2 + 381538^2 .

It is a junction number, because it is equal to n+sod(n) for n = 402200620799 and 402200620808.

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 15 ways as a sum of consecutive naturals, for example, 425079 + ... + 992518.

Almost surely, 2^402200620840 is an apocalyptic number.

402200620840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402200620840 is an abundant number, since it is smaller than the sum of its proper divisors (530181935720).

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

402200620840 is a wasteful number, since it uses less digits than its factorization.

402200620840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417822 (or 1417818 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The spelling of 402200620840 in words is "four hundred two billion, two hundred million, six hundred twenty thousand, eight hundred forty".