1218426 has 16 divisors (see below), whose sum is σ = 2658528. Its totient is φ = 369200.

The previous prime is 1218421. The next prime is 1218433. The reversal of 1218426 is 6248121.

It is a junction number, because it is equal to n+sod(n) for n = 1218396 and 1218405.

It is not an unprimeable number, because it can be changed into a prime (1218421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9165 + ... + 9296.

It is an arithmetic number, because the mean of its divisors is an integer number (166158).

2^1218426 is an apocalyptic number.

1218426 is an abundant number, since it is smaller than the sum of its proper divisors (1440102).

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

1218426 is a wasteful number, since it uses less digits than its factorization.

1218426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18477.

The product of its digits is 768, while the sum is 24.

The square root of 1218426 is about 1103.8233554333. The cubic root of 1218426 is about 106.8070006212.

The spelling of 1218426 in words is "one million, two hundred eighteen thousand, four hundred twenty-six".