42100428833 has 2 divisors, whose sum is σ = 42100428834. Its totient is φ = 42100428832.

The previous prime is 42100428823. The next prime is 42100428857. The reversal of 42100428833 is 33882400124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26013818944 + 16086609889 = 161288^2 + 126833^2 .

It is a cyclic number.

It is not a de Polignac number, because 42100428833 - 2¹⁴ = 42100412449 is a prime.

It is a super-2 number, since 2×42100428833² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42100428793 and 42100428802.

It is not a weakly prime, because it can be changed into another prime (42100428823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21050214416 + 21050214417.

It is an arithmetic number, because the mean of its divisors is an integer number (21050214417).

Almost surely, 2^42100428833 is an apocalyptic number.

It is an amenable number.

42100428833 is a deficient number, since it is larger than the sum of its proper divisors (1).

42100428833 is an equidigital number, since it uses as much as digits as its factorization.

42100428833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 35.

Adding to 42100428833 its reverse (33882400124), we get a palindrome (75982828957).

The spelling of 42100428833 in words is "forty-two billion, one hundred million, four hundred twenty-eight thousand, eight hundred thirty-three".