1107657121 has 4 divisors (see below), whose sum is σ = 1107734932. Its totient is φ = 1107579312.

The previous prime is 1107657119. The next prime is 1107657163. The reversal of 1107657121 is 1217567011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 976875025 + 130782096 = 31255^2 + 11436^2 .

It is a cyclic number.

It is not a de Polignac number, because 1107657121 - 2¹ = 1107657119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1107657521) 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, 10770 + ... + 48283.

It is an arithmetic number, because the mean of its divisors is an integer number (276933733).

Almost surely, 2^1107657121 is an apocalyptic number.

It is an amenable number.

1107657121 is a deficient number, since it is larger than the sum of its proper divisors (77811).

1107657121 is an equidigital number, since it uses as much as digits as its factorization.

1107657121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77810.

The product of its (nonzero) digits is 2940, while the sum is 31.

The square root of 1107657121 is about 33281.4831550518. The cubic root of 1107657121 is about 1034.6698196089.

The spelling of 1107657121 in words is "one billion, one hundred seven million, six hundred fifty-seven thousand, one hundred twenty-one".