1242678 has 8 divisors (see below), whose sum is σ = 2485368. Its totient is φ = 414224.

The previous prime is 1242643. The next prime is 1242739. The reversal of 1242678 is 8762421.

It is a sphenic number, since it is the product of 3 distinct primes.

1242678 is an admirable number.

It is a super-2 number, since 2×1242678² = 3088497223368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103551 + ... + 103562.

It is an arithmetic number, because the mean of its divisors is an integer number (310671).

2^1242678 is an apocalyptic number.

1242678 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1242678 is a wasteful number, since it uses less digits than its factorization.

1242678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207118.

The product of its digits is 5376, while the sum is 30.

The square root of 1242678 is about 1114.7546815331. The cubic root of 1242678 is about 107.5109922057.

The spelling of 1242678 in words is "one million, two hundred forty-two thousand, six hundred seventy-eight".