1242202647 has 16 divisors (see below), whose sum is σ = 1897758720. Its totient is φ = 708000672.

The previous prime is 1242202627. The next prime is 1242202657. The reversal of 1242202647 is 7462022421.

It is not a de Polignac number, because 1242202647 - 2⁶ = 1242202583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242202627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67863 + ... + 84200.

It is an arithmetic number, because the mean of its divisors is an integer number (118609920).

Almost surely, 2^1242202647 is an apocalyptic number.

1242202647 is a deficient number, since it is larger than the sum of its proper divisors (655556073).

1242202647 is a wasteful number, since it uses less digits than its factorization.

1242202647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152462.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 1242202647 is about 35244.8953325159. The cubic root of 1242202647 is about 1074.9728197923.

The spelling of 1242202647 in words is "one billion, two hundred forty-two million, two hundred two thousand, six hundred forty-seven".