1021142015 has 32 divisors (see below), whose sum is σ = 1287277056. Its totient is φ = 776724480.

The previous prime is 1021141993. The next prime is 1021142039. The reversal of 1021142015 is 5102411201.

It is not a de Polignac number, because 1021142015 - 2²⁰ = 1020093439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021141984 and 1021142002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3029927 + ... + 3030263.

It is an arithmetic number, because the mean of its divisors is an integer number (40227408).

Almost surely, 2^1021142015 is an apocalyptic number.

1021142015 is a deficient number, since it is larger than the sum of its proper divisors (266135041).

1021142015 is a wasteful number, since it uses less digits than its factorization.

1021142015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1021142015 is about 31955.3127820712. The cubic root of 1021142015 is about 1006.9982486023.

Adding to 1021142015 its reverse (5102411201), we get a palindrome (6123553216).

The spelling of 1021142015 in words is "one billion, twenty-one million, one hundred forty-two thousand, fifteen".