107212240 has 20 divisors (see below), whose sum is σ = 249268644. Its totient is φ = 42884864.

The previous prime is 107212187. The next prime is 107212241. The reversal of 107212240 is 42212701.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 46621584 + 60590656 = 6828^2 + 7784^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×107212240² = 22988928811635200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107212241) 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, 669997 + ... + 670156.

Almost surely, 2^107212240 is an apocalyptic number.

107212240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

107212240 is an abundant number, since it is smaller than the sum of its proper divisors (142056404).

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

107212240 is a wasteful number, since it uses less digits than its factorization.

107212240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340166 (or 1340160 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 107212240 is about 10354.3343581323. The cubic root of 107212240 is about 475.0596268637.

Adding to 107212240 its reverse (42212701), we get a palindrome (149424941).

The spelling of 107212240 in words is "one hundred seven million, two hundred twelve thousand, two hundred forty".