42021140201 has 2 divisors, whose sum is σ = 42021140202. Its totient is φ = 42021140200.

The previous prime is 42021140191. The next prime is 42021140237. The reversal of 42021140201 is 10204112024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34149192025 + 7871948176 = 184795^2 + 88724^2 .

It is a cyclic number.

It is not a de Polignac number, because 42021140201 - 2³⁰ = 40947398377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42021140201.

It is not a weakly prime, because it can be changed into another prime (42021140701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21010570100 + 21010570101.

It is an arithmetic number, because the mean of its divisors is an integer number (21010570101).

Almost surely, 2^42021140201 is an apocalyptic number.

It is an amenable number.

42021140201 is a deficient number, since it is larger than the sum of its proper divisors (1).

42021140201 is an equidigital number, since it uses as much as digits as its factorization.

42021140201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 42021140201 its reverse (10204112024), we get a palindrome (52225252225).

The spelling of 42021140201 in words is "forty-two billion, twenty-one million, one hundred forty thousand, two hundred one".