1242684 has 18 divisors (see below), whose sum is σ = 3141320. Its totient is φ = 414216.

The previous prime is 1242643. The next prime is 1242739. The reversal of 1242684 is 4862421.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17224 + ... + 17295.

2^1242684 is an apocalyptic number.

It is an amenable number.

1242684 is an abundant number, since it is smaller than the sum of its proper divisors (1898636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242684 is a wasteful number, since it uses less digits than its factorization.

1242684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34529 (or 34524 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 1242684 is about 1114.7573727049. The cubic root of 1242684 is about 107.5111652366.

The spelling of 1242684 in words is "one million, two hundred forty-two thousand, six hundred eighty-four".