203402400140020 has 48 divisors (see below), whose sum is σ = 452277232884288. Its totient is φ = 76574003028480.

The previous prime is 203402400140011. The next prime is 203402400140047. The reversal of 203402400140020 is 20041004204302.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 203402400139973 and 203402400140000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21877159 + ... + 29755921.

It is an arithmetic number, because the mean of its divisors is an integer number (9422442351756).

Almost surely, 2^{203402400140020} is an apocalyptic number.

203402400140020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203402400140020 is an abundant number, since it is smaller than the sum of its proper divisors (248874832744268).

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

203402400140020 is a wasteful number, since it uses less digits than its factorization.

203402400140020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7954720 (or 7954718 counting only the distinct ones).

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

Adding to 203402400140020 its reverse (20041004204302), we get a palindrome (223443404344322).

The spelling of 203402400140020 in words is "two hundred three trillion, four hundred two billion, four hundred million, one hundred forty thousand, twenty".