120342511 has 4 divisors (see below), whose sum is σ = 120483792. Its totient is φ = 120201232.

The previous prime is 120342479. The next prime is 120342539. The reversal of 120342511 is 115243021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 115243021 = 271 ⋅425251.

It is a cyclic number.

It is not a de Polignac number, because 120342511 - 2⁵ = 120342479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120342811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69355 + ... + 71068.

It is an arithmetic number, because the mean of its divisors is an integer number (30120948).

Almost surely, 2^120342511 is an apocalyptic number.

120342511 is a deficient number, since it is larger than the sum of its proper divisors (141281).

120342511 is an equidigital number, since it uses as much as digits as its factorization.

120342511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141280.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 120342511 is about 10970.0734272839. The cubic root of 120342511 is about 493.7112495145.

Adding to 120342511 its reverse (115243021), we get a palindrome (235585532).

The spelling of 120342511 in words is "one hundred twenty million, three hundred forty-two thousand, five hundred eleven".