42100424101 has 2 divisors, whose sum is σ = 42100424102. Its totient is φ = 42100424100.

The previous prime is 42100424087. The next prime is 42100424123. The reversal of 42100424101 is 10142400124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30773930625 + 11326493476 = 175425^2 + 106426^2 .

It is a cyclic number.

It is not a de Polignac number, because 42100424101 - 2¹⁹ = 42099899813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42100424141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21050212050 + 21050212051.

It is an arithmetic number, because the mean of its divisors is an integer number (21050212051).

Almost surely, 2^42100424101 is an apocalyptic number.

It is an amenable number.

42100424101 is a deficient number, since it is larger than the sum of its proper divisors (1).

42100424101 is an equidigital number, since it uses as much as digits as its factorization.

42100424101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 42100424101 its reverse (10142400124), we get a palindrome (52242824225).

The spelling of 42100424101 in words is "forty-two billion, one hundred million, four hundred twenty-four thousand, one hundred one".