106421530 has 16 divisors (see below), whose sum is σ = 202827240. Its totient is φ = 40064512.

The previous prime is 106421507. The next prime is 106421533. The reversal of 106421530 is 35124601.

It can be written as a sum of positive squares in 4 ways, for example, as 76160529 + 30261001 = 8727^2 + 5501^2 .

It is a super-2 number, since 2×106421530² = 22651084095081800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (106421533) 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, 312835 + ... + 313174.

Almost surely, 2^106421530 is an apocalyptic number.

106421530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

106421530 is a deficient number, since it is larger than the sum of its proper divisors (96405710).

106421530 is a wasteful number, since it uses less digits than its factorization.

106421530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626033.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 106421530 is about 10316.0811357802. The cubic root of 106421530 is about 473.8888598643. Note that the first 4 decimals are identical.

The spelling of 106421530 in words is "one hundred six million, four hundred twenty-one thousand, five hundred thirty".