201240021404 has 24 divisors (see below), whose sum is σ = 371610802080. Its totient is φ = 95163816704.

The previous prime is 201240021391. The next prime is 201240021413. The reversal of 201240021404 is 404120042102.

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, 12280529 + ... + 12296904.

It is an arithmetic number, because the mean of its divisors is an integer number (15483783420).

Almost surely, 2^201240021404 is an apocalyptic number.

It is an amenable number.

201240021404 is a deficient number, since it is larger than the sum of its proper divisors (170370780676).

201240021404 is a wasteful number, since it uses less digits than its factorization.

201240021404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24577549 (or 24577547 counting only the distinct ones).

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

Adding to 201240021404 its reverse (404120042102), we get a palindrome (605360063506).

The spelling of 201240021404 in words is "two hundred one billion, two hundred forty million, twenty-one thousand, four hundred four".