106421355 has 24 divisors (see below), whose sum is σ = 186692688. Its totient is φ = 56072256.

The previous prime is 106421333. The next prime is 106421383. The reversal of 106421355 is 553124601.

106421355 is a `hidden beast` number, since 1 + 0 + 642 + 13 + 5 + 5 = 666.

It is not a de Polignac number, because 106421355 - 2⁵ = 106421323 is a prime.

It is a super-2 number, since 2×106421355² = 22651009600072050, which contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 10512 + ... + 17981.

It is an arithmetic number, because the mean of its divisors is an integer number (7778862).

Almost surely, 2^106421355 is an apocalyptic number.

106421355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

106421355 is a deficient number, since it is larger than the sum of its proper divisors (80271333).

106421355 is a wasteful number, since it uses less digits than its factorization.

106421355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28587 (or 28584 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 106421355 is about 10316.0726538737. The cubic root of 106421355 is about 473.8886001093. Note that the first 3 decimals are identical.

Adding to 106421355 its reverse (553124601), we get a palindrome (659545956).

The spelling of 106421355 in words is "one hundred six million, four hundred twenty-one thousand, three hundred fifty-five".