1021240113 has 8 divisors (see below), whose sum is σ = 1362167328. Its totient is φ = 680569824.

The previous prime is 1021240109. The next prime is 1021240127. The reversal of 1021240113 is 3110421201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1021240113 - 2² = 1021240109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021240092 and 1021240101.

It is not an unprimeable number, because it can be changed into a prime (1021240183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54756 + ... + 70997.

It is an arithmetic number, because the mean of its divisors is an integer number (170270916).

Almost surely, 2^1021240113 is an apocalyptic number.

It is an amenable number.

1021240113 is a deficient number, since it is larger than the sum of its proper divisors (340927215).

1021240113 is a wasteful number, since it uses less digits than its factorization.

1021240113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128463.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1021240113 is about 31956.8476699439. The cubic root of 1021240113 is about 1007.0304939869.

Adding to 1021240113 its reverse (3110421201), we get a palindrome (4131661314).

The spelling of 1021240113 in words is "one billion, twenty-one million, two hundred forty thousand, one hundred thirteen".