1242724 has 12 divisors (see below), whose sum is σ = 2485504. Its totient is φ = 532584.

The previous prime is 1242643. The next prime is 1242739. The reversal of 1242724 is 4272421.

It is a happy number.

1242724 is an admirable number.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1242695 and 1242704.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22164 + ... + 22219.

2^1242724 is an apocalyptic number.

1242724 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1242724 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.

1242724 is a wasteful number, since it uses less digits than its factorization.

1242724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44394 (or 44392 counting only the distinct ones).

The product of its digits is 896, while the sum is 22.

The square root of 1242724 is about 1114.7753136843. The cubic root of 1242724 is about 107.5123187614.

The spelling of 1242724 in words is "one million, two hundred forty-two thousand, seven hundred twenty-four".