1242634684 has 12 divisors (see below), whose sum is σ = 2174912208. Its totient is φ = 621231200.

The previous prime is 1242634663. The next prime is 1242634697. The reversal of 1242634684 is 4864362421.

It is a super-3 number, since 3×1242634684³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 19689 + ... + 53599.

It is an arithmetic number, because the mean of its divisors is an integer number (181242684).

Almost surely, 2^1242634684 is an apocalyptic number.

It is an amenable number.

1242634684 is a deficient number, since it is larger than the sum of its proper divisors (932277524).

1242634684 is a wasteful number, since it uses less digits than its factorization.

1242634684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43076 (or 43074 counting only the distinct ones).

The product of its digits is 221184, while the sum is 40.

The square root of 1242634684 is about 35251.0238716551. The cubic root of 1242634684 is about 1075.0974302175.

The spelling of 1242634684 in words is "one billion, two hundred forty-two million, six hundred thirty-four thousand, six hundred eighty-four".