1242133351 has 2 divisors, whose sum is σ = 1242133352. Its totient is φ = 1242133350.

The previous prime is 1242133309. The next prime is 1242133357. The reversal of 1242133351 is 1533312421.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1242133351 - 2⁹ = 1242132839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242133357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621066675 + 621066676.

It is an arithmetic number, because the mean of its divisors is an integer number (621066676).

Almost surely, 2^1242133351 is an apocalyptic number.

1242133351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242133351 is an equidigital number, since it uses as much as digits as its factorization.

1242133351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

The square root of 1242133351 is about 35243.9122544589. The cubic root of 1242133351 is about 1074.9528303803.

Adding to 1242133351 its reverse (1533312421), we get a palindrome (2775445772).

The spelling of 1242133351 in words is "one billion, two hundred forty-two million, one hundred thirty-three thousand, three hundred fifty-one".