1242751 has 8 divisors (see below), whose sum is σ = 1348704. Its totient is φ = 1140480.

The previous prime is 1242739. The next prime is 1242757. The reversal of 1242751 is 1572421.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1242751 - 2⁷ = 1242623 is a prime.

It is a Duffinian 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, 195 + ... + 1588.

It is an arithmetic number, because the mean of its divisors is an integer number (168588).

2^1242751 is an apocalyptic number.

1242751 is a deficient number, since it is larger than the sum of its proper divisors (105953).

1242751 is a wasteful number, since it uses less digits than its factorization.

1242751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841.

The product of its digits is 560, while the sum is 22.

The square root of 1242751 is about 1114.7874236822. The cubic root of 1242751 is about 107.5130973766.

The spelling of 1242751 in words is "one million, two hundred forty-two thousand, seven hundred fifty-one".