1320553042 has 4 divisors (see below), whose sum is σ = 1980829566. Its totient is φ = 660276520.

The previous prime is 1320553033. The next prime is 1320553043. The reversal of 1320553042 is 2403550231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1271706921 + 48846121 = 35661^2 + 6989^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1320552998 and 1320553016.

It is not an unprimeable number, because it can be changed into a prime (1320553043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330138259 + ... + 330138262.

Almost surely, 2^1320553042 is an apocalyptic number.

1320553042 is a deficient number, since it is larger than the sum of its proper divisors (660276524).

1320553042 is an equidigital number, since it uses as much as digits as its factorization.

1320553042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660276523.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 1320553042 is about 36339.4144421728. The cubic root of 1320553042 is about 1097.1144874996.

The spelling of 1320553042 in words is "one billion, three hundred twenty million, five hundred fifty-three thousand, forty-two".