1218942 has 16 divisors (see below), whose sum is σ = 2708880. Its totient is φ = 406296.

The previous prime is 1218941. The next prime is 1218949. The reversal of 1218942 is 2498121.

It is a super-3 number, since 3×1218942³ = 5433383742263858664, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218941) 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, 11233 + ... + 11340.

It is an arithmetic number, because the mean of its divisors is an integer number (169305).

2^1218942 is an apocalyptic number.

1218942 is an abundant number, since it is smaller than the sum of its proper divisors (1489938).

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

1218942 is a wasteful number, since it uses less digits than its factorization.

1218942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22584 (or 22578 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 1218942 is about 1104.0570637426. The cubic root of 1218942 is about 106.8220759819.

The spelling of 1218942 in words is "one million, two hundred eighteen thousand, nine hundred forty-two".