1021043013 has 8 divisors (see below), whose sum is σ = 1367040576. Its totient is φ = 677870400.

The previous prime is 1021042999. The next prime is 1021043077. The reversal of 1021043013 is 3103401201.

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

It is not a de Polignac number, because 1021043013 - 2¹³ = 1021034821 is a prime.

It is a super-2 number, since 2×1021043013² = 2085057668792236338, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021042983 and 1021043001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021003013) by changing a digit.

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, 705393 + ... + 706838.

It is an arithmetic number, because the mean of its divisors is an integer number (170880072).

Almost surely, 2^1021043013 is an apocalyptic number.

It is an amenable number.

1021043013 is a deficient number, since it is larger than the sum of its proper divisors (345997563).

1021043013 is a wasteful number, since it uses less digits than its factorization.

1021043013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412475.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1021043013 is about 31953.7636750352. The cubic root of 1021043013 is about 1006.9657039738.

Adding to 1021043013 its reverse (3103401201), we get a palindrome (4124444214).

The spelling of 1021043013 in words is "one billion, twenty-one million, forty-three thousand, thirteen".