106641921 has 8 divisors (see below), whose sum is σ = 142330240. Its totient is φ = 71024112.

The previous prime is 106641907. The next prime is 106641923. The reversal of 106641921 is 129146601.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 106641921 - 2⁷ = 106641793 is a prime.

It is a super-2 number, since 2×106641921² = 22744998629140482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106641923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13990 + ... + 20223.

It is an arithmetic number, because the mean of its divisors is an integer number (17791280).

Almost surely, 2^106641921 is an apocalyptic number.

It is an amenable number.

106641921 is a deficient number, since it is larger than the sum of its proper divisors (35688319).

106641921 is a wasteful number, since it uses less digits than its factorization.

106641921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35255.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 106641921 is about 10326.7575259614. The cubic root of 106641921 is about 474.2157637223.

The spelling of 106641921 in words is "one hundred six million, six hundred forty-one thousand, nine hundred twenty-one".