1242136 has 32 divisors (see below), whose sum is σ = 2731680. Its totient is φ = 518400.

The previous prime is 1242121. The next prime is 1242151. The reversal of 1242136 is 6312421.

It is an interprime number because it is at equal distance from previous prime (1242121) and next prime (1242151).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2026 + ... + 2566.

It is an arithmetic number, because the mean of its divisors is an integer number (85365).

2^1242136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1365840).

1242136 is an abundant number, since it is smaller than the sum of its proper divisors (1489544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242136 is a wasteful number, since it uses less digits than its factorization.

1242136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595 (or 591 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 1242136 is about 1114.5115522057. The cubic root of 1242136 is about 107.4953594535.

Adding to 1242136 its reverse (6312421), we get a palindrome (7554557).

It can be divided in two parts, 1242 and 136, that added together give a triangular number (1378 = T₅₂).

The spelling of 1242136 in words is "one million, two hundred forty-two thousand, one hundred thirty-six".