1331420452 has 6 divisors (see below), whose sum is σ = 2329985798. Its totient is φ = 665710224.

The previous prime is 1331420423. The next prime is 1331420477. The reversal of 1331420452 is 2540241331.

It can be written as a sum of positive squares in only one way, i.e., 1320304896 + 11115556 = 36336^2 + 3334^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166427553 + ... + 166427560.

Almost surely, 2^1331420452 is an apocalyptic number.

It is an amenable number.

1331420452 is a deficient number, since it is larger than the sum of its proper divisors (998565346).

1331420452 is a wasteful number, since it uses less digits than its factorization.

1331420452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332855117 (or 332855115 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1331420452 is about 36488.6345592706. The cubic root of 1331420452 is about 1100.1158148031.

Adding to 1331420452 its reverse (2540241331), we get a palindrome (3871661783).

The spelling of 1331420452 in words is "one billion, three hundred thirty-one million, four hundred twenty thousand, four hundred fifty-two".