120725543 has 2 divisors, whose sum is σ = 120725544. Its totient is φ = 120725542.

The previous prime is 120725537. The next prime is 120725567. The reversal of 120725543 is 345527021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120725543 - 2¹⁰ = 120724519 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120725593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60362771 + 60362772.

It is an arithmetic number, because the mean of its divisors is an integer number (60362772).

Almost surely, 2^120725543 is an apocalyptic number.

120725543 is a deficient number, since it is larger than the sum of its proper divisors (1).

120725543 is an equidigital number, since it uses as much as digits as its factorization.

120725543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 120725543 is about 10987.5175995308. The cubic root of 120725543 is about 494.2344974967.

It can be divided in two parts, 12072 and 5543, that multiplied together give a triangular number (66915096 = T₁₁₅₆₈).

The spelling of 120725543 in words is "one hundred twenty million, seven hundred twenty-five thousand, five hundred forty-three".