106439243 has 2 divisors, whose sum is σ = 106439244. Its totient is φ = 106439242.

The previous prime is 106439237. The next prime is 106439257. The reversal of 106439243 is 342934601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 106439243 - 2⁸ = 106438987 is a prime.

It is a super-2 number, since 2×106439243² = 22658624900826098, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (106469243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53219621 + 53219622.

It is an arithmetic number, because the mean of its divisors is an integer number (53219622).

Almost surely, 2^106439243 is an apocalyptic number.

106439243 is a deficient number, since it is larger than the sum of its proper divisors (1).

106439243 is an equidigital number, since it uses as much as digits as its factorization.

106439243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 106439243 is about 10316.9396140522. The cubic root of 106439243 is about 473.9151500574.

The spelling of 106439243 in words is "one hundred six million, four hundred thirty-nine thousand, two hundred forty-three".