106257919 has 4 divisors (see below), whose sum is σ = 106604344. Its totient is φ = 105911496.

The previous prime is 106257917. The next prime is 106257947. The reversal of 106257919 is 919752601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 919752601 = 8269 ⋅111229.

It is a cyclic number.

It is not a de Polignac number, because 106257919 - 2¹ = 106257917 is a prime.

It is a super-2 number, since 2×106257919² = 22581490700421122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106257917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172752 + ... + 173365.

It is an arithmetic number, because the mean of its divisors is an integer number (26651086).

Almost surely, 2^106257919 is an apocalyptic number.

106257919 is a deficient number, since it is larger than the sum of its proper divisors (346425).

106257919 is an equidigital number, since it uses as much as digits as its factorization.

106257919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346424.

The product of its (nonzero) digits is 34020, while the sum is 40.

The square root of 106257919 is about 10308.1481848099. The cubic root of 106257919 is about 473.6458852295.

The spelling of 106257919 in words is "one hundred six million, two hundred fifty-seven thousand, nine hundred nineteen".