401840620282 has 16 divisors (see below), whose sum is σ = 638287829352. Its totient is φ = 189080616960.

The previous prime is 401840620273. The next prime is 401840620301. The reversal of 401840620282 is 282026048104.

It is a Cunningham number, because it is equal to 633909²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 401840620281 + 1 = 633909^2 + 1^2 .

It is a super-2 number, since 2×401840620282² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336519 + ... + 957562.

Almost surely, 2^401840620282 is an apocalyptic number.

401840620282 is a deficient number, since it is larger than the sum of its proper divisors (236447209070).

401840620282 is a wasteful number, since it uses less digits than its factorization.

401840620282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303233.

The product of its (nonzero) digits is 49152, while the sum is 37.

Adding to 401840620282 its reverse (282026048104), we get a palindrome (683866668386).

The spelling of 401840620282 in words is "four hundred one billion, eight hundred forty million, six hundred twenty thousand, two hundred eighty-two".