1021142039 has 2 divisors, whose sum is σ = 1021142040. Its totient is φ = 1021142038.

The previous prime is 1021141993. The next prime is 1021142053. The reversal of 1021142039 is 9302411201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021142039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021142839) 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 as a sum of consecutive naturals, namely, 510571019 + 510571020.

It is an arithmetic number, because the mean of its divisors is an integer number (510571020).

Almost surely, 2^1021142039 is an apocalyptic number.

1021142039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021142039 is an equidigital number, since it uses as much as digits as its factorization.

1021142039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1021142039 is about 31955.3131575956. The cubic root of 1021142039 is about 1006.9982564915.

The spelling of 1021142039 in words is "one billion, twenty-one million, one hundred forty-two thousand, thirty-nine".