1242263983 has 2 divisors, whose sum is σ = 1242263984. Its totient is φ = 1242263982.

The previous prime is 1242263969. The next prime is 1242264013. The reversal of 1242263983 is 3893622421.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1242263983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242261983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621131991 + 621131992.

It is an arithmetic number, because the mean of its divisors is an integer number (621131992).

Almost surely, 2^1242263983 is an apocalyptic number.

1242263983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242263983 is an equidigital number, since it uses as much as digits as its factorization.

1242263983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 40.

The square root of 1242263983 is about 35245.7654619672. The cubic root of 1242263983 is about 1074.9905124095.

It can be divided in two parts, 1242 and 263983, that added together give a square (265225 = 515²).

The spelling of 1242263983 in words is "one billion, two hundred forty-two million, two hundred sixty-three thousand, nine hundred eighty-three".