1320451542 has 48 divisors (see below), whose sum is σ = 2884546080. Its totient is φ = 436542336.

The previous prime is 1320451537. The next prime is 1320451549. The reversal of 1320451542 is 2451540231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320451549) 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 23 ways as a sum of consecutive naturals, for example, 1505208 + ... + 1506084.

It is an arithmetic number, because the mean of its divisors is an integer number (60094710).

Almost surely, 2^1320451542 is an apocalyptic number.

1320451542 is an abundant number, since it is smaller than the sum of its proper divisors (1564094538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1320451542 is a wasteful number, since it uses less digits than its factorization.

1320451542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477 (or 1474 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1320451542 is about 36338.0178600870. The cubic root of 1320451542 is about 1097.0863780711.

Adding to 1320451542 its reverse (2451540231), we get a palindrome (3771991773).

It can be divided in two parts, 13204 and 51542, that added together give a palindrome (64746).

The spelling of 1320451542 in words is "one billion, three hundred twenty million, four hundred fifty-one thousand, five hundred forty-two".