106320421 has 16 divisors (see below), whose sum is σ = 117347328. Its totient is φ = 95990400.

The previous prime is 106320413. The next prime is 106320449. The reversal of 106320421 is 124023601.

It is a cyclic number.

It is not a de Polignac number, because 106320421 - 2³ = 106320413 is a prime.

It is a super-2 number, since 2×106320421² = 22608063843234482, 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 (106320481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27415 + ... + 31051.

It is an arithmetic number, because the mean of its divisors is an integer number (7334208).

Almost surely, 2^106320421 is an apocalyptic number.

It is an amenable number.

106320421 is a deficient number, since it is larger than the sum of its proper divisors (11026907).

106320421 is a wasteful number, since it uses less digits than its factorization.

106320421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3732.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 106320421 is about 10311.1794184759. The cubic root of 106320421 is about 473.7387348194.

The spelling of 106320421 in words is "one hundred six million, three hundred twenty thousand, four hundred twenty-one".