106601421 has 4 divisors (see below), whose sum is σ = 142135232. Its totient is φ = 71067612.

The previous prime is 106601413. The next prime is 106601423. The reversal of 106601421 is 124106601.

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.

It is not a de Polignac number, because 106601421 - 2³ = 106601413 is a prime.

It is a super-2 number, since 2×106601421² = 22727725918438482, 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 (106601423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17766901 + ... + 17766906.

It is an arithmetic number, because the mean of its divisors is an integer number (35533808).

Almost surely, 2^106601421 is an apocalyptic number.

It is an amenable number.

106601421 is a deficient number, since it is larger than the sum of its proper divisors (35533811).

106601421 is an equidigital number, since it uses as much as digits as its factorization.

106601421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35533810.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 106601421 is about 10324.7964144578. The cubic root of 106601421 is about 474.1557242617.

The spelling of 106601421 in words is "one hundred six million, six hundred one thousand, four hundred twenty-one".