120305501 has 2 divisors, whose sum is σ = 120305502. Its totient is φ = 120305500.

The previous prime is 120305491. The next prime is 120305503. The reversal of 120305501 is 105503021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61246276 + 59059225 = 7826^2 + 7685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120305501 is a prime.

It is a super-2 number, since 2×120305501² = 28946827141722002, which contains 22 as substring.

Together with 120305503, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120305501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120305503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60152750 + 60152751.

It is an arithmetic number, because the mean of its divisors is an integer number (60152751).

Almost surely, 2^120305501 is an apocalyptic number.

It is an amenable number.

120305501 is a deficient number, since it is larger than the sum of its proper divisors (1).

120305501 is an equidigital number, since it uses as much as digits as its factorization.

120305501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 120305501 is about 10968.3864355702. The cubic root of 120305501 is about 493.6606325252.

Adding to 120305501 its reverse (105503021), we get a palindrome (225808522).

The spelling of 120305501 in words is "one hundred twenty million, three hundred five thousand, five hundred one".