1320120542 has 32 divisors (see below), whose sum is σ = 2259895680. Its totient is φ = 573914880.

The previous prime is 1320120541. The next prime is 1320120547. The reversal of 1320120542 is 2450210231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320120541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9563 + ... + 52265.

It is an arithmetic number, because the mean of its divisors is an integer number (70621740).

Almost surely, 2^1320120542 is an apocalyptic number.

1320120542 is a deficient number, since it is larger than the sum of its proper divisors (939775138).

1320120542 is a wasteful number, since it uses less digits than its factorization.

1320120542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42788.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1320120542 is about 36333.4631159762. The cubic root of 1320120542 is about 1096.9947008616.

Adding to 1320120542 its reverse (2450210231), we get a palindrome (3770330773).

The spelling of 1320120542 in words is "one billion, three hundred twenty million, one hundred twenty thousand, five hundred forty-two".