1242634685 has 16 divisors (see below), whose sum is σ = 1564617600. Its totient is φ = 945616320.

The previous prime is 1242634663. The next prime is 1242634697. The reversal of 1242634685 is 5864362421.

It is not a de Polignac number, because 1242634685 - 2¹⁰ = 1242633661 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9035 + ... + 50664.

It is an arithmetic number, because the mean of its divisors is an integer number (97788600).

Almost surely, 2^1242634685 is an apocalyptic number.

It is an amenable number.

1242634685 is a deficient number, since it is larger than the sum of its proper divisors (321982915).

1242634685 is a wasteful number, since it uses less digits than its factorization.

1242634685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59908.

The product of its digits is 276480, while the sum is 41.

The square root of 1242634685 is about 35251.0238858391. The cubic root of 1242634685 is about 1075.0974305059.

The spelling of 1242634685 in words is "one billion, two hundred forty-two million, six hundred thirty-four thousand, six hundred eighty-five".