1042139023 has 2 divisors, whose sum is σ = 1042139024. Its totient is φ = 1042139022.

The previous prime is 1042139011. The next prime is 1042139029. The reversal of 1042139023 is 3209312401.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1042139023 - 2⁵ = 1042138991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042139029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521069511 + 521069512.

It is an arithmetic number, because the mean of its divisors is an integer number (521069512).

Almost surely, 2^1042139023 is an apocalyptic number.

1042139023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042139023 is an equidigital number, since it uses as much as digits as its factorization.

1042139023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1042139023 is about 32282.1781018568. The cubic root of 1042139023 is about 1013.8535343279.

The spelling of 1042139023 in words is "one billion, forty-two million, one hundred thirty-nine thousand, twenty-three".