42112201 has 2 divisors, whose sum is σ = 42112202. Its totient is φ = 42112200.

The previous prime is 42112193. The next prime is 42112211. The reversal of 42112201 is 10221124.

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., 41990400 + 121801 = 6480^2 + 349^2 .

It is a cyclic number.

It is not a de Polignac number, because 42112201 - 2³ = 42112193 is a prime.

It is not a weakly prime, because it can be changed into another prime (42112211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21056100 + 21056101.

It is an arithmetic number, because the mean of its divisors is an integer number (21056101).

Almost surely, 2^42112201 is an apocalyptic number.

It is an amenable number.

42112201 is a deficient number, since it is larger than the sum of its proper divisors (1).

42112201 is an equidigital number, since it uses as much as digits as its factorization.

42112201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 42112201 is about 6489.3914198482. The cubic root of 42112201 is about 347.9119239165.

Adding to 42112201 its reverse (10221124), we get a palindrome (52333325).

The spelling of 42112201 in words is "forty-two million, one hundred twelve thousand, two hundred one".