1242035644 has 6 divisors (see below), whose sum is σ = 2173562384. Its totient is φ = 621017820.

The previous prime is 1242035617. The next prime is 1242035653. The reversal of 1242035644 is 4465302421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155254452 + ... + 155254459.

Almost surely, 2^1242035644 is an apocalyptic number.

It is an amenable number.

1242035644 is a deficient number, since it is larger than the sum of its proper divisors (931526740).

1242035644 is a wasteful number, since it uses less digits than its factorization.

1242035644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310508915 (or 310508913 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 1242035644 is about 35242.5260729137. The cubic root of 1242035644 is about 1074.9246441499.

The spelling of 1242035644 in words is "one billion, two hundred forty-two million, thirty-five thousand, six hundred forty-four".