1042834021 has 2 divisors, whose sum is σ = 1042834022. Its totient is φ = 1042834020.

The previous prime is 1042834003. The next prime is 1042834033. The reversal of 1042834021 is 1204382401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 727380900 + 315453121 = 26970^2 + 17761^2 .

It is an emirp because it is prime and its reverse (1204382401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1042834021 - 2¹¹ = 1042831973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042834921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521417010 + 521417011.

It is an arithmetic number, because the mean of its divisors is an integer number (521417011).

Almost surely, 2^1042834021 is an apocalyptic number.

It is an amenable number.

1042834021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042834021 is an equidigital number, since it uses as much as digits as its factorization.

1042834021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 1042834021 is about 32292.9407301348. The cubic root of 1042834021 is about 1014.0788624220.

The spelling of 1042834021 in words is "one billion, forty-two million, eight hundred thirty-four thousand, twenty-one".