1320942572 has 6 divisors (see below), whose sum is σ = 2311649508. Its totient is φ = 660471284.

The previous prime is 1320942569. The next prime is 1320942577. The reversal of 1320942572 is 2752490231.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1320942577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165117818 + ... + 165117825.

It is an arithmetic number, because the mean of its divisors is an integer number (385274918).

Almost surely, 2^1320942572 is an apocalyptic number.

It is an amenable number.

1320942572 is a deficient number, since it is larger than the sum of its proper divisors (990706936).

1320942572 is a wasteful number, since it uses less digits than its factorization.

1320942572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330235647 (or 330235645 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 1320942572 is about 36344.7736545435. The cubic root of 1320942572 is about 1097.2223506396. Note that the first 3 decimals are identical.

The spelling of 1320942572 in words is "one billion, three hundred twenty million, nine hundred forty-two thousand, five hundred seventy-two".