106021249 has 2 divisors, whose sum is σ = 106021250. Its totient is φ = 106021248.

The previous prime is 106021229. The next prime is 106021297. The reversal of 106021249 is 942120601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98903025 + 7118224 = 9945^2 + 2668^2 .

It is an emirp because it is prime and its reverse (942120601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 106021249 - 2⁵ = 106021217 is a prime.

It is a super-2 number, since 2×106021249² = 22481010479040002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (106021229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53010624 + 53010625.

It is an arithmetic number, because the mean of its divisors is an integer number (53010625).

Almost surely, 2^106021249 is an apocalyptic number.

It is an amenable number.

106021249 is a deficient number, since it is larger than the sum of its proper divisors (1).

106021249 is an equidigital number, since it uses as much as digits as its factorization.

106021249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 106021249 is about 10296.6620319403. The cubic root of 106021249 is about 473.2939707508.

The spelling of 106021249 in words is "one hundred six million, twenty-one thousand, two hundred forty-nine".