10542307021 has 2 divisors, whose sum is σ = 10542307022. Its totient is φ = 10542307020.

The previous prime is 10542307007. The next prime is 10542307031. The reversal of 10542307021 is 12070324501.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6128697796 + 4413609225 = 78286^2 + 66435^2 .

It is a cyclic number.

It is not a de Polignac number, because 10542307021 - 2²³ = 10533918413 is a prime.

It is a super-2 number, since 2×10542307021² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10542307031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5271153510 + 5271153511.

It is an arithmetic number, because the mean of its divisors is an integer number (5271153511).

Almost surely, 2^10542307021 is an apocalyptic number.

It is an amenable number.

10542307021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10542307021 is an equidigital number, since it uses as much as digits as its factorization.

10542307021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The spelling of 10542307021 in words is "ten billion, five hundred forty-two million, three hundred seven thousand, twenty-one".