1134142021 has 4 divisors (see below), whose sum is σ = 1134428652. Its totient is φ = 1133855392.

The previous prime is 1134142003. The next prime is 1134142039. The reversal of 1134142021 is 1202414311.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1134142003) and next prime (1134142039).

It can be written as a sum of positive squares in 2 ways, for example, as 461777121 + 672364900 = 21489^2 + 25930^2 .

It is a cyclic number.

It is not a de Polignac number, because 1134142021 - 2⁹ = 1134141509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1134142021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1134142081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137296 + ... + 145321.

It is an arithmetic number, because the mean of its divisors is an integer number (283607163).

Almost surely, 2^1134142021 is an apocalyptic number.

It is an amenable number.

1134142021 is a deficient number, since it is larger than the sum of its proper divisors (286631).

1134142021 is an equidigital number, since it uses as much as digits as its factorization.

1134142021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286630.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1134142021 is about 33677.0251209931. The cubic root of 1134142021 is about 1042.8515250508.

Adding to 1134142021 its reverse (1202414311), we get a palindrome (2336556332).

The spelling of 1134142021 in words is "one billion, one hundred thirty-four million, one hundred forty-two thousand, twenty-one".