42225101 has 2 divisors, whose sum is σ = 42225102. Its totient is φ = 42225100.

The previous prime is 42225091. The next prime is 42225107. The reversal of 42225101 is 10152224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32775625 + 9449476 = 5725^2 + 3074^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42225101 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42225101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42225107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21112550 + 21112551.

It is an arithmetic number, because the mean of its divisors is an integer number (21112551).

Almost surely, 2^42225101 is an apocalyptic number.

It is an amenable number.

42225101 is a deficient number, since it is larger than the sum of its proper divisors (1).

42225101 is an equidigital number, since it uses as much as digits as its factorization.

42225101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 42225101 is about 6498.0844100396. The cubic root of 42225101 is about 348.2225560356. Note that the first 3 decimals are identical.

Adding to 42225101 its reverse (10152224), we get a palindrome (52377325).

The spelling of 42225101 in words is "forty-two million, two hundred twenty-five thousand, one hundred one".