1021134423 has 16 divisors (see below), whose sum is σ = 1447953920. Its totient is φ = 638274816.

The previous prime is 1021134421. The next prime is 1021134463. The reversal of 1021134423 is 3244311201.

It is not a de Polignac number, because 1021134423 - 2¹ = 1021134421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1021134423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021134421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86815 + ... + 97872.

It is an arithmetic number, because the mean of its divisors is an integer number (90497120).

Almost surely, 2^1021134423 is an apocalyptic number.

1021134423 is a deficient number, since it is larger than the sum of its proper divisors (426819497).

1021134423 is a wasteful number, since it uses less digits than its factorization.

1021134423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184806.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1021134423 is about 31955.1939909618. The cubic root of 1021134423 is about 1006.9957529815.

Adding to 1021134423 its reverse (3244311201), we get a palindrome (4265445624).

The spelling of 1021134423 in words is "one billion, twenty-one million, one hundred thirty-four thousand, four hundred twenty-three".