1212144 has 20 divisors (see below), whose sum is σ = 3131496. Its totient is φ = 404032.

The previous prime is 1212121. The next prime is 1212149. The reversal of 1212144 is 4412121.

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12579 + ... + 12674.

2^1212144 is an apocalyptic number.

It is an amenable number.

1212144 is an abundant number, since it is smaller than the sum of its proper divisors (1919352).

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

1212144 is a wasteful number, since it uses less digits than its factorization.

1212144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25264 (or 25258 counting only the distinct ones).

The product of its digits is 64, while the sum is 15.

The square root of 1212144 is about 1100.9741141371. The cubic root of 1212144 is about 106.6231245893.

Adding to 1212144 its reverse (4412121), we get a palindrome (5624265).

The spelling of 1212144 in words is "one million, two hundred twelve thousand, one hundred forty-four".