1202421247 has 2 divisors, whose sum is σ = 1202421248. Its totient is φ = 1202421246.

The previous prime is 1202421197. The next prime is 1202421299. The reversal of 1202421247 is 7421242021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1202421247 - 2⁷ = 1202421119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202425247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601210623 + 601210624.

It is an arithmetic number, because the mean of its divisors is an integer number (601210624).

Almost surely, 2^1202421247 is an apocalyptic number.

1202421247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202421247 is an equidigital number, since it uses as much as digits as its factorization.

1202421247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 1202421247 is about 34675.9462307808. The cubic root of 1202421247 is about 1063.3727998266.

Adding to 1202421247 its reverse (7421242021), we get a palindrome (8623663268).

The spelling of 1202421247 in words is "one billion, two hundred two million, four hundred twenty-one thousand, two hundred forty-seven".