1021142023 has 32 divisors (see below), whose sum is σ = 1208390400. Its totient is φ = 852883200.

The previous prime is 1021141993. The next prime is 1021142039. The reversal of 1021142023 is 3202411201.

It is a cyclic number.

It is not a de Polignac number, because 1021142023 - 2⁵ = 1021141991 is a prime.

It is a super-2 number, since 2×1021142023² = 2085462062273065058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021141988 and 1021142006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021142053) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2304840 + ... + 2305282.

It is an arithmetic number, because the mean of its divisors is an integer number (37762200).

Almost surely, 2^1021142023 is an apocalyptic number.

1021142023 is a deficient number, since it is larger than the sum of its proper divisors (187248377).

1021142023 is a wasteful number, since it uses less digits than its factorization.

1021142023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1021142023 is about 31955.3129072460. The cubic root of 1021142023 is about 1006.9982512320.

Adding to 1021142023 its reverse (3202411201), we get a palindrome (4223553224).

The spelling of 1021142023 in words is "one billion, twenty-one million, one hundred forty-two thousand, twenty-three".