106421250 has 160 divisors (see below), whose sum is σ = 299154240. Its totient is φ = 25056000.

The previous prime is 106421221. The next prime is 106421257. The reversal of 106421250 is 52124601.

It is a super-2 number, since 2×106421250² = 22650964903125000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (106421257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1803721 + ... + 1803779.

It is an arithmetic number, because the mean of its divisors is an integer number (1869714).

Almost surely, 2^106421250 is an apocalyptic number.

106421250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 106421250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149577120).

106421250 is an abundant number, since it is smaller than the sum of its proper divisors (192732990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

106421250 is a wasteful number, since it uses less digits than its factorization.

106421250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 106421250 is about 10316.0675647264. The cubic root of 106421250 is about 473.8884442561. Note that the first 3 decimals are identical.

Adding to 106421250 its reverse (52124601), we get a palindrome (158545851).

The spelling of 106421250 in words is "one hundred six million, four hundred twenty-one thousand, two hundred fifty".