42021140237 has 2 divisors, whose sum is σ = 42021140238. Its totient is φ = 42021140236.

The previous prime is 42021140201. The next prime is 42021140269. The reversal of 42021140237 is 73204112024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41675589316 + 345550921 = 204146^2 + 18589^2 .

It is a cyclic number.

It is not a de Polignac number, because 42021140237 - 2¹⁰ = 42021139213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42021140437) 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, 21010570118 + 21010570119.

It is an arithmetic number, because the mean of its divisors is an integer number (21010570119).

Almost surely, 2^42021140237 is an apocalyptic number.

It is an amenable number.

42021140237 is a deficient number, since it is larger than the sum of its proper divisors (1).

42021140237 is an equidigital number, since it uses as much as digits as its factorization.

42021140237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 26.

The spelling of 42021140237 in words is "forty-two billion, twenty-one million, one hundred forty thousand, two hundred thirty-seven".