1242436 has 12 divisors (see below), whose sum is σ = 2341612. Its totient is φ = 573408.

The previous prime is 1242421. The next prime is 1242457. The reversal of 1242436 is 6342421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 688900 + 553536 = 830^2 + 744^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11895 + ... + 11998.

2^1242436 is an apocalyptic number.

It is an amenable number.

1242436 is a deficient number, since it is larger than the sum of its proper divisors (1099176).

1242436 is a wasteful number, since it uses less digits than its factorization.

1242436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23910 (or 23908 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 1242436 is about 1114.6461321873. The cubic root of 1242436 is about 107.5040128302.

Adding to 1242436 its reverse (6342421), we get a palindrome (7584857).

The spelling of 1242436 in words is "one million, two hundred forty-two thousand, four hundred thirty-six".