1242530351 has 2 divisors, whose sum is σ = 1242530352. Its totient is φ = 1242530350.

The previous prime is 1242530347. The next prime is 1242530369. The reversal of 1242530351 is 1530352421.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1242530351 - 2² = 1242530347 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1242530351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242530321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621265175 + 621265176.

It is an arithmetic number, because the mean of its divisors is an integer number (621265176).

Almost surely, 2^1242530351 is an apocalyptic number.

1242530351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242530351 is an equidigital number, since it uses as much as digits as its factorization.

1242530351 is an evil number, because the sum of its binary digits is even.

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

The square root of 1242530351 is about 35249.5439828659. The cubic root of 1242530351 is about 1075.0673405805.

Adding to 1242530351 its reverse (1530352421), we get a palindrome (2772882772).

The spelling of 1242530351 in words is "one billion, two hundred forty-two million, five hundred thirty thousand, three hundred fifty-one".