120403523 has 2 divisors, whose sum is σ = 120403524. Its totient is φ = 120403522.

The previous prime is 120403501. The next prime is 120403529. The reversal of 120403523 is 325304021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120403523 - 2⁸ = 120403267 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120403495 and 120403504.

It is not a weakly prime, because it can be changed into another prime (120403529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60201761 + 60201762.

It is an arithmetic number, because the mean of its divisors is an integer number (60201762).

Almost surely, 2^120403523 is an apocalyptic number.

120403523 is a deficient number, since it is larger than the sum of its proper divisors (1).

120403523 is an equidigital number, since it uses as much as digits as its factorization.

120403523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 120403523 is about 10972.8539131805. The cubic root of 120403523 is about 493.7946703589.

Adding to 120403523 its reverse (325304021), we get a palindrome (445707544).

The spelling of 120403523 in words is "one hundred twenty million, four hundred three thousand, five hundred twenty-three".