1212404 has 12 divisors (see below), whose sum is σ = 2143428. Its totient is φ = 600000.

The previous prime is 1212401. The next prime is 1212427. The reversal of 1212404 is 4042121.

It can be written as a sum of positive squares in 2 ways, for example, as 960400 + 252004 = 980^2 + 502^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212401) 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, 1097 + ... + 1904.

It is an arithmetic number, because the mean of its divisors is an integer number (178619).

2^1212404 is an apocalyptic number.

It is an amenable number.

1212404 is a deficient number, since it is larger than the sum of its proper divisors (931024).

1212404 is a wasteful number, since it uses less digits than its factorization.

1212404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3106 (or 3104 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1212404 is about 1101.0921850599. The cubic root of 1212404 is about 106.6307474544.

Adding to 1212404 its reverse (4042121), we get a palindrome (5254525).

The spelling of 1212404 in words is "one million, two hundred twelve thousand, four hundred four".