1218126 has 64 divisors (see below), whose sum is σ = 3161088. Its totient is φ = 304128.

The previous prime is 1218121. The next prime is 1218131. The reversal of 1218126 is 6218121.

1218126 = T₁₁₆ + T₁₁₇ + ... + T₂₀₆.

It is an interprime number because it is at equal distance from previous prime (1218121) and next prime (1218131).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12510 + ... + 12606.

It is an arithmetic number, because the mean of its divisors is an integer number (49392).

2^1218126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1218126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1580544).

1218126 is an abundant number, since it is smaller than the sum of its proper divisors (1942962).

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

1218126 is a wasteful number, since it uses less digits than its factorization.

1218126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145.

The product of its digits is 192, while the sum is 21.

The square root of 1218126 is about 1103.6874557591. The cubic root of 1218126 is about 106.7982339199.

The spelling of 1218126 in words is "one million, two hundred eighteen thousand, one hundred twenty-six".