106721124 has 12 divisors (see below), whose sum is σ = 249015984. Its totient is φ = 35573704.

The previous prime is 106721123. The next prime is 106721149. The reversal of 106721124 is 421127601.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×106721124² = 22778796615646752, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 106721094 and 106721103.

It is not an unprimeable number, because it can be changed into a prime (106721123) 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, 4446702 + ... + 4446725.

It is an arithmetic number, because the mean of its divisors is an integer number (20751332).

Almost surely, 2^106721124 is an apocalyptic number.

It is an amenable number.

106721124 is an abundant number, since it is smaller than the sum of its proper divisors (142294860).

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

106721124 is a wasteful number, since it uses less digits than its factorization.

106721124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8893434 (or 8893432 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 106721124 is about 10330.5916577900. The cubic root of 106721124 is about 474.3331347529. Note that the first 3 decimals are identical.

Adding to 106721124 its reverse (421127601), we get a palindrome (527848725).

The spelling of 106721124 in words is "one hundred six million, seven hundred twenty-one thousand, one hundred twenty-four".