107788421 has 8 divisors (see below), whose sum is σ = 116396280. Its totient is φ = 99225792.

The previous prime is 107788411. The next prime is 107788427. The reversal of 107788421 is 124887701.

It can be written as a sum of positive squares in 4 ways, for example, as 1079521 + 106708900 = 1039^2 + 10330^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 107788421 - 2⁶ = 107788357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107788427) 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 7 ways as a sum of consecutive naturals, for example, 6266 + ... + 15963.

It is an arithmetic number, because the mean of its divisors is an integer number (14549535).

Almost surely, 2^107788421 is an apocalyptic number.

It is an amenable number.

107788421 is a deficient number, since it is larger than the sum of its proper divisors (8607859).

107788421 is a wasteful number, since it uses less digits than its factorization.

107788421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22615.

The product of its (nonzero) digits is 25088, while the sum is 38.

The square root of 107788421 is about 10382.1202555162. The cubic root of 107788421 is about 475.9091301363.

It can be divided in two parts, 1077 and 88421, that added together give a palindrome (89498).

The spelling of 107788421 in words is "one hundred seven million, seven hundred eighty-eight thousand, four hundred twenty-one".