1242263612 has 6 divisors (see below), whose sum is σ = 2173961328. Its totient is φ = 621131804.

The previous prime is 1242263611. The next prime is 1242263621. The reversal of 1242263612 is 2163622421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242263611) 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, 155282948 + ... + 155282955.

It is an arithmetic number, because the mean of its divisors is an integer number (362326888).

Almost surely, 2^1242263612 is an apocalyptic number.

It is an amenable number.

1242263612 is a deficient number, since it is larger than the sum of its proper divisors (931697716).

1242263612 is a wasteful number, since it uses less digits than its factorization.

1242263612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310565907 (or 310565905 counting only the distinct ones).

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

The square root of 1242263612 is about 35245.7601989232. The cubic root of 1242263612 is about 1074.9904053948.

The spelling of 1242263612 in words is "one billion, two hundred forty-two million, two hundred sixty-three thousand, six hundred twelve".