107419721 has 4 divisors (see below), whose sum is σ = 108370452. Its totient is φ = 106468992.

The previous prime is 107419703. The next prime is 107419727. The reversal of 107419721 is 127914701.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2131600 + 105288121 = 1460^2 + 10261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-107419721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (107419727) 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, 475196 + ... + 475421.

It is an arithmetic number, because the mean of its divisors is an integer number (27092613).

Almost surely, 2^107419721 is an apocalyptic number.

It is an amenable number.

107419721 is a deficient number, since it is larger than the sum of its proper divisors (950731).

107419721 is an equidigital number, since it uses as much as digits as its factorization.

107419721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950730.

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 107419721 is about 10364.3485564699. The cubic root of 107419721 is about 475.3658802417.

The spelling of 107419721 in words is "one hundred seven million, four hundred nineteen thousand, seven hundred twenty-one".