401255040140 has 12 divisors (see below), whose sum is σ = 842635584336. Its totient is φ = 160502016048.

The previous prime is 401255040119. The next prime is 401255040143. The reversal of 401255040140 is 41040552104.

It is a super-2 number, since 2×401255040140² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401255040143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10031375984 + ... + 10031376023.

It is an arithmetic number, because the mean of its divisors is an integer number (70219632028).

Almost surely, 2^401255040140 is an apocalyptic number.

It is an amenable number.

401255040140 is an abundant number, since it is smaller than the sum of its proper divisors (441380544196).

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

401255040140 is a wasteful number, since it uses less digits than its factorization.

401255040140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20062752016 (or 20062752014 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 401255040140 its reverse (41040552104), we get a palindrome (442295592244).

The spelling of 401255040140 in words is "four hundred one billion, two hundred fifty-five million, forty thousand, one hundred forty".