1242493 has 6 divisors (see below), whose sum is σ = 1445406. Its totient is φ = 1064952.

The previous prime is 1242487. The next prime is 1242503. The reversal of 1242493 is 3942421.

It can be written as a sum of positive squares in only one way, i.e., 974169 + 268324 = 987^2 + 518^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1242493 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 (1242403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12630 + ... + 12727.

It is an arithmetic number, because the mean of its divisors is an integer number (240901).

2^1242493 is an apocalyptic number.

It is an amenable number.

1242493 is a deficient number, since it is larger than the sum of its proper divisors (202913).

1242493 is an equidigital number, since it uses as much as digits as its factorization.

1242493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25371 (or 25364 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 1242493 is about 1114.6717005468. The cubic root of 1242493 is about 107.5056568143.

The spelling of 1242493 in words is "one million, two hundred forty-two thousand, four hundred ninety-three".