42135001373 has 2 divisors, whose sum is σ = 42135001374. Its totient is φ = 42135001372.

The previous prime is 42135001289. The next prime is 42135001393. The reversal of 42135001373 is 37310053124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41539738969 + 595262404 = 203813^2 + 24398^2 .

It is a cyclic number.

It is not a de Polignac number, because 42135001373 - 2¹² = 42134997277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42135001393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21067500686 + 21067500687.

It is an arithmetic number, because the mean of its divisors is an integer number (21067500687).

Almost surely, 2^42135001373 is an apocalyptic number.

It is an amenable number.

42135001373 is a deficient number, since it is larger than the sum of its proper divisors (1).

42135001373 is an equidigital number, since it uses as much as digits as its factorization.

42135001373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 29.

Adding to 42135001373 its reverse (37310053124), we get a palindrome (79445054497).

The spelling of 42135001373 in words is "forty-two billion, one hundred thirty-five million, one thousand, three hundred seventy-three".