1242753 has 8 divisors (see below), whose sum is σ = 1684416. Its totient is φ = 814800.

The previous prime is 1242739. The next prime is 1242757. The reversal of 1242753 is 3572421.

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

It is a de Polignac number, because none of the positive numbers 2^k-1242753 is a prime.

It is a Curzon number.

1242753 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3213 + ... + 3578.

It is an arithmetic number, because the mean of its divisors is an integer number (210552).

2^1242753 is an apocalyptic number.

It is an amenable number.

1242753 is a deficient number, since it is larger than the sum of its proper divisors (441663).

1242753 is an equidigital number, since it uses as much as digits as its factorization.

1242753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6855.

The product of its digits is 1680, while the sum is 24.

The square root of 1242753 is about 1114.7883207138. The cubic root of 1242753 is about 107.5131550514.

The spelling of 1242753 in words is "one million, two hundred forty-two thousand, seven hundred fifty-three".