120303657 has 8 divisors (see below), whose sum is σ = 178227680. Its totient is φ = 80202420.

The previous prime is 120303569. The next prime is 120303683. The reversal of 120303657 is 756303021.

It is a happy number.

120303657 is a `hidden beast` number, since 1 + 2 + 0 + 3 + 0 + 3 + 657 = 666.

It is not a de Polignac number, because 120303657 - 2⁸ = 120303401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4455691 = 120303657 / (1 + 2 + 0 + 3 + 0 + 3 + 6 + 5 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120303657.

It is not an unprimeable number, because it can be changed into a prime (120303857) 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, 2227819 + ... + 2227872.

It is an arithmetic number, because the mean of its divisors is an integer number (22278460).

Almost surely, 2^120303657 is an apocalyptic number.

It is an amenable number.

120303657 is a deficient number, since it is larger than the sum of its proper divisors (57924023).

120303657 is an equidigital number, since it uses as much as digits as its factorization.

120303657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4455700 (or 4455694 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 120303657 is about 10968.3023754818. The cubic root of 120303657 is about 493.6581102940.

Adding to 120303657 its reverse (756303021), we get a palindrome (876606678).

The spelling of 120303657 in words is "one hundred twenty million, three hundred three thousand, six hundred fifty-seven".