402220134040 has 32 divisors (see below), whose sum is σ = 914325158880. Its totient is φ = 159229412352.

The previous prime is 402220134037. The next prime is 402220134083. The reversal of 402220134040 is 40431022204.

It is a happy number.

It is a congruent number.

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, 51828612 + ... + 51836371.

It is an arithmetic number, because the mean of its divisors is an integer number (28572661215).

Almost surely, 2^402220134040 is an apocalyptic number.

402220134040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402220134040 is an abundant number, since it is smaller than the sum of its proper divisors (512105024840).

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

402220134040 is a wasteful number, since it uses less digits than its factorization.

402220134040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103665091 (or 103665087 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 402220134040 its reverse (40431022204), we get a palindrome (442651156244).

The spelling of 402220134040 in words is "four hundred two billion, two hundred twenty million, one hundred thirty-four thousand, forty".