106159421 has 4 divisors (see below), whose sum is σ = 110775072. Its totient is φ = 101543772.

The previous prime is 106159399. The next prime is 106159433. The reversal of 106159421 is 124951601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124951601 = 257 ⋅486193.

It is a cyclic number.

It is not a de Polignac number, because 106159421 - 2¹⁰ = 106158397 is a prime.

It is a super-2 number, since 2×106159421² = 22539645334110482, 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 (106159451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2307791 + ... + 2307836.

It is an arithmetic number, because the mean of its divisors is an integer number (27693768).

Almost surely, 2^106159421 is an apocalyptic number.

It is an amenable number.

106159421 is a deficient number, since it is larger than the sum of its proper divisors (4615651).

106159421 is an equidigital number, since it uses as much as digits as its factorization.

106159421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4615650.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 106159421 is about 10303.3694003467. The cubic root of 106159421 is about 473.4994879989.

The spelling of 106159421 in words is "one hundred six million, one hundred fifty-nine thousand, four hundred twenty-one".