120145547 has 2 divisors, whose sum is σ = 120145548. Its totient is φ = 120145546.

The previous prime is 120145513. The next prime is 120145567. The reversal of 120145547 is 745541021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120145547 - 2¹⁰ = 120144523 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (120145567) 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 as a sum of consecutive naturals, namely, 60072773 + 60072774.

It is an arithmetic number, because the mean of its divisors is an integer number (60072774).

Almost surely, 2^120145547 is an apocalyptic number.

120145547 is a deficient number, since it is larger than the sum of its proper divisors (1).

120145547 is an equidigital number, since it uses as much as digits as its factorization.

120145547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 120145547 is about 10961.0924181853. The cubic root of 120145547 is about 493.4417508350.

Adding to 120145547 its reverse (745541021), we get a palindrome (865686568).

The spelling of 120145547 in words is "one hundred twenty million, one hundred forty-five thousand, five hundred forty-seven".