42431101 has 2 divisors, whose sum is σ = 42431102. Its totient is φ = 42431100.

The previous prime is 42431093. The next prime is 42431117. The reversal of 42431101 is 10113424.

It is an a-pointer prime, because the next prime (42431117) can be obtained adding 42431101 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42263001 + 168100 = 6501^2 + 410^2 .

It is a cyclic number.

It is not a de Polignac number, because 42431101 - 2³ = 42431093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42431141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21215550 + 21215551.

It is an arithmetic number, because the mean of its divisors is an integer number (21215551).

Almost surely, 2^42431101 is an apocalyptic number.

It is an amenable number.

42431101 is a deficient number, since it is larger than the sum of its proper divisors (1).

42431101 is an equidigital number, since it uses as much as digits as its factorization.

42431101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 42431101 is about 6513.9159497187. The cubic root of 42431101 is about 348.7879188653.

Adding to 42431101 its reverse (10113424), we get a palindrome (52544525).

The spelling of 42431101 in words is "forty-two million, four hundred thirty-one thousand, one hundred one".