1242793 has 4 divisors (see below), whose sum is σ = 1276420. Its totient is φ = 1209168.

The previous prime is 1242781. The next prime is 1242803. The reversal of 1242793 is 3972421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3972421 = 853 ⋅4657.

It can be written as a sum of positive squares in 2 ways, for example, as 1183744 + 59049 = 1088^2 + 243^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1242793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16758 + ... + 16831.

It is an arithmetic number, because the mean of its divisors is an integer number (319105).

2^1242793 is an apocalyptic number.

It is an amenable number.

1242793 is a deficient number, since it is larger than the sum of its proper divisors (33627).

1242793 is an equidigital number, since it uses as much as digits as its factorization.

1242793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33626.

The product of its digits is 3024, while the sum is 28.

The square root of 1242793 is about 1114.8062611952. The cubic root of 1242793 is about 107.5143085335.

It can be divided in two parts, 1242 and 793, that multiplied together give a triangular number (984906 = T₁₄₀₃).

The spelling of 1242793 in words is "one million, two hundred forty-two thousand, seven hundred ninety-three".