1331224242 has 16 divisors (see below), whose sum is σ = 2664228672. Its totient is φ = 443444720.

The previous prime is 1331224201. The next prime is 1331224319. The reversal of 1331224242 is 2424221331.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64353 + ... + 82484.

It is an arithmetic number, because the mean of its divisors is an integer number (166514292).

Almost surely, 2^1331224242 is an apocalyptic number.

1331224242 is an abundant number, since it is smaller than the sum of its proper divisors (1333004430).

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

1331224242 is a wasteful number, since it uses less digits than its factorization.

1331224242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148353.

The product of its digits is 2304, while the sum is 24.

The square root of 1331224242 is about 36485.9458147929. The cubic root of 1331224242 is about 1100.0617711868.

Adding to 1331224242 its reverse (2424221331), we get a palindrome (3755445573).

The spelling of 1331224242 in words is "one billion, three hundred thirty-one million, two hundred twenty-four thousand, two hundred forty-two".