10420542091 has 2 divisors, whose sum is σ = 10420542092. Its totient is φ = 10420542090.

The previous prime is 10420542059. The next prime is 10420542103. The reversal of 10420542091 is 19024502401.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10420542091 - 2⁵ = 10420542059 is a prime.

It is not a weakly prime, because it can be changed into another prime (10420548091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5210271045 + 5210271046.

It is an arithmetic number, because the mean of its divisors is an integer number (5210271046).

Almost surely, 2^10420542091 is an apocalyptic number.

10420542091 is a deficient number, since it is larger than the sum of its proper divisors (1).

10420542091 is an equidigital number, since it uses as much as digits as its factorization.

10420542091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 10420542091 in words is "ten billion, four hundred twenty million, five hundred forty-two thousand, ninety-one".