1242766036 has 6 divisors (see below), whose sum is σ = 2174840570. Its totient is φ = 621383016.

The previous prime is 1242765991. The next prime is 1242766039. The reversal of 1242766036 is 6306672421.

It can be written as a sum of positive squares in only one way, i.e., 1213128900 + 29637136 = 34830^2 + 5444^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1242765986 and 1242766004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242766039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155345751 + ... + 155345758.

Almost surely, 2^1242766036 is an apocalyptic number.

It is an amenable number.

1242766036 is a deficient number, since it is larger than the sum of its proper divisors (932074534).

1242766036 is a wasteful number, since it uses less digits than its factorization.

1242766036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310691513 (or 310691511 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 1242766036 is about 35252.8869172441. The cubic root of 1242766036 is about 1075.1353097391.

The spelling of 1242766036 in words is "one billion, two hundred forty-two million, seven hundred sixty-six thousand, thirty-six".