1331255042 has 32 divisors (see below), whose sum is σ = 2304675072. Its totient is φ = 571817664.

The previous prime is 1331255027. The next prime is 1331255047. The reversal of 1331255042 is 2405521331.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (1331255047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7958 + ... + 52209.

It is an arithmetic number, because the mean of its divisors is an integer number (72021096).

Almost surely, 2^1331255042 is an apocalyptic number.

1331255042 is a deficient number, since it is larger than the sum of its proper divisors (973420030).

1331255042 is a wasteful number, since it uses less digits than its factorization.

1331255042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60242.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1331255042 is about 36486.3678926801. The cubic root of 1331255042 is about 1100.0702550170.

Adding to 1331255042 its reverse (2405521331), we get a palindrome (3736776373).

The spelling of 1331255042 in words is "one billion, three hundred thirty-one million, two hundred fifty-five thousand, forty-two".