42123535001 has 2 divisors, whose sum is σ = 42123535002. Its totient is φ = 42123535000.

The previous prime is 42123534991. The next prime is 42123535019. The reversal of 42123535001 is 10053532124.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37806913600 + 4316621401 = 194440^2 + 65701^2 .

It is a cyclic number.

It is not a de Polignac number, because 42123535001 - 2¹⁴ = 42123518617 is a prime.

It is not a weakly prime, because it can be changed into another prime (42123535501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21061767500 + 21061767501.

It is an arithmetic number, because the mean of its divisors is an integer number (21061767501).

Almost surely, 2^42123535001 is an apocalyptic number.

It is an amenable number.

42123535001 is a deficient number, since it is larger than the sum of its proper divisors (1).

42123535001 is an equidigital number, since it uses as much as digits as its factorization.

42123535001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 26.

The spelling of 42123535001 in words is "forty-two billion, one hundred twenty-three million, five hundred thirty-five thousand, one".