1210426643 has 2 divisors, whose sum is σ = 1210426644. Its totient is φ = 1210426642.

The previous prime is 1210426631. The next prime is 1210426661. The reversal of 1210426643 is 3466240121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1210426643 - 2¹² = 1210422547 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1210426603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605213321 + 605213322.

It is an arithmetic number, because the mean of its divisors is an integer number (605213322).

Almost surely, 2^1210426643 is an apocalyptic number.

1210426643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210426643 is an equidigital number, since it uses as much as digits as its factorization.

1210426643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 1210426643 is about 34791.1862833103. The cubic root of 1210426643 is about 1065.7274649516.

Adding to 1210426643 its reverse (3466240121), we get a palindrome (4676666764).

The spelling of 1210426643 in words is "one billion, two hundred ten million, four hundred twenty-six thousand, six hundred forty-three".