107657421 has 4 divisors (see below), whose sum is σ = 143543232. Its totient is φ = 71771612.

The previous prime is 107657399. The next prime is 107657437. The reversal of 107657421 is 124756701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 107657421 - 2⁶ = 107657357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107657461) 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, 17942901 + ... + 17942906.

It is an arithmetic number, because the mean of its divisors is an integer number (35885808).

Almost surely, 2^107657421 is an apocalyptic number.

It is an amenable number.

107657421 is a deficient number, since it is larger than the sum of its proper divisors (35885811).

107657421 is an equidigital number, since it uses as much as digits as its factorization.

107657421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35885810.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 107657421 is about 10375.8094142096. The cubic root of 107657421 is about 475.7162542255.

The spelling of 107657421 in words is "one hundred seven million, six hundred fifty-seven thousand, four hundred twenty-one".