1242330451 has 2 divisors, whose sum is σ = 1242330452. Its totient is φ = 1242330450.

The previous prime is 1242330421. The next prime is 1242330457. The reversal of 1242330451 is 1540332421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1242330451 - 2¹¹ = 1242328403 is a prime.

It is not a weakly prime, because it can be changed into another prime (1242330457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621165225 + 621165226.

It is an arithmetic number, because the mean of its divisors is an integer number (621165226).

Almost surely, 2^1242330451 is an apocalyptic number.

1242330451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242330451 is an equidigital number, since it uses as much as digits as its factorization.

1242330451 is an evil number, because the sum of its binary digits is even.

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

The square root of 1242330451 is about 35246.7083711373. The cubic root of 1242330451 is about 1075.0096847153.

Adding to 1242330451 its reverse (1540332421), we get a palindrome (2782662872).

The spelling of 1242330451 in words is "one billion, two hundred forty-two million, three hundred thirty thousand, four hundred fifty-one".