1242993 has 4 divisors (see below), whose sum is σ = 1657328. Its totient is φ = 828660.

The previous prime is 1242991. The next prime is 1243003. The reversal of 1242993 is 3992421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1242993 - 2¹ = 1242991 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1242993.

It is not an unprimeable number, because it can be changed into a prime (1242991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207163 + ... + 207168.

It is an arithmetic number, because the mean of its divisors is an integer number (414332).

2^1242993 is an apocalyptic number.

It is an amenable number.

1242993 is a deficient number, since it is larger than the sum of its proper divisors (414335).

1242993 is an equidigital number, since it uses as much as digits as its factorization.

1242993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414334.

The product of its digits is 3888, while the sum is 30.

The square root of 1242993 is about 1114.8959592715. The cubic root of 1242993 is about 107.5200755728.

The spelling of 1242993 in words is "one million, two hundred forty-two thousand, nine hundred ninety-three".