1050542021 has 2 divisors, whose sum is σ = 1050542022. Its totient is φ = 1050542020.

The previous prime is 1050541969. The next prime is 1050542029. The reversal of 1050542021 is 1202450501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 666930625 + 383611396 = 25825^2 + 19586^2 .

It is a cyclic number.

It is not a de Polignac number, because 1050542021 - 2¹⁸ = 1050279877 is a prime.

It is a super-2 number, since 2×1050542021² = 2207277075773528882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1050541984 and 1050542002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1050542029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525271010 + 525271011.

It is an arithmetic number, because the mean of its divisors is an integer number (525271011).

Almost surely, 2^1050542021 is an apocalyptic number.

It is an amenable number.

1050542021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1050542021 is an equidigital number, since it uses as much as digits as its factorization.

1050542021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1050542021 is about 32412.0659785827. The cubic root of 1050542021 is about 1016.5712182123.

Adding to 1050542021 its reverse (1202450501), we get a palindrome (2252992522).

The spelling of 1050542021 in words is "one billion, fifty million, five hundred forty-two thousand, twenty-one".