1242508 has 6 divisors (see below), whose sum is σ = 2174396. Its totient is φ = 621252.

The previous prime is 1242503. The next prime is 1242517. The reversal of 1242508 is 8052421.

It is a super-2 number, since 2×1242508² = 3087652260128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1242503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155310 + ... + 155317.

2^1242508 is an apocalyptic number.

It is an amenable number.

1242508 is a deficient number, since it is larger than the sum of its proper divisors (931888).

1242508 is a wasteful number, since it uses less digits than its factorization.

1242508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310631 (or 310629 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1242508 is about 1114.6784289651. The cubic root of 1242508 is about 107.5060894333.

Adding to 1242508 its reverse (8052421), we get a palindrome (9294929).

The spelling of 1242508 in words is "one million, two hundred forty-two thousand, five hundred eight".