202104120440 has 32 divisors (see below), whose sum is σ = 455211517680. Its totient is φ = 80756804352.

The previous prime is 202104120409. The next prime is 202104120473. The reversal of 202104120440 is 44021401202.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2612774 + ... + 2689013.

Almost surely, 2^202104120440 is an apocalyptic number.

202104120440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202104120440 is an abundant number, since it is smaller than the sum of its proper divisors (253107397240).

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

202104120440 is a wasteful number, since it uses less digits than its factorization.

202104120440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5302751 (or 5302747 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 202104120440 its reverse (44021401202), we get a palindrome (246125521642).

The spelling of 202104120440 in words is "two hundred two billion, one hundred four million, one hundred twenty thousand, four hundred forty".