42021140437 has 2 divisors, whose sum is σ = 42021140438. Its totient is φ = 42021140436.

The previous prime is 42021140419. The next prime is 42021140459. The reversal of 42021140437 is 73404112024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33682893841 + 8338246596 = 183529^2 + 91314^2 .

It is a cyclic number.

It is not a de Polignac number, because 42021140437 - 2¹⁵ = 42021107669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42021140237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21010570218 + 21010570219.

It is an arithmetic number, because the mean of its divisors is an integer number (21010570219).

Almost surely, 2^42021140437 is an apocalyptic number.

It is an amenable number.

42021140437 is a deficient number, since it is larger than the sum of its proper divisors (1).

42021140437 is an equidigital number, since it uses as much as digits as its factorization.

42021140437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 28.

The spelling of 42021140437 in words is "forty-two billion, twenty-one million, one hundred forty thousand, four hundred thirty-seven".