1013540121 has 24 divisors (see below), whose sum is σ = 1656249504. Its totient is φ = 614265120.

The previous prime is 1013540117. The next prime is 1013540159. The reversal of 1013540121 is 1210453101.

1013540121 is a `hidden beast` number, since 1 + 0 + 1 + 3 + 540 + 121 = 666.

1013540121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1013540121 - 2² = 1013540117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1013540094 and 1013540103.

It is not an unprimeable number, because it can be changed into a prime (1013540191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186916 + ... + 192261.

It is an arithmetic number, because the mean of its divisors is an integer number (69010396).

Almost surely, 2^1013540121 is an apocalyptic number.

1013540121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1013540121 is a deficient number, since it is larger than the sum of its proper divisors (642709383).

1013540121 is an equidigital number, since it uses as much as digits as its factorization.

1013540121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379203 (or 379191 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1013540121 is about 31836.1448828215. The cubic root of 1013540121 is about 1004.4931549883.

Adding to 1013540121 its reverse (1210453101), we get a palindrome (2223993222).

The spelling of 1013540121 in words is "one billion, thirteen million, five hundred forty thousand, one hundred twenty-one".