1212424 has 8 divisors (see below), whose sum is σ = 2273310. Its totient is φ = 606208.

The previous prime is 1212401. The next prime is 1212427. The reversal of 1212424 is 4242121.

It can be written as a sum of positive squares in only one way, i.e., 980100 + 232324 = 990^2 + 482^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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

It is a d-powerful number, because it can be written as 1 + 2 + 1 + 2¹⁵ + 4 + 2¹⁷ + 4¹⁰ .

It is a junction number, because it is equal to n+sod(n) for n = 1212398 and 1212407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75769 + ... + 75784.

2^1212424 is an apocalyptic number.

It is an amenable number.

1212424 is a deficient number, since it is larger than the sum of its proper divisors (1060886).

1212424 is a wasteful number, since it uses less digits than its factorization.

1212424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151559 (or 151555 counting only the distinct ones).

The product of its digits is 128, while the sum is 16.

The square root of 1212424 is about 1101.1012669142. The cubic root of 1212424 is about 106.6313337835.

Adding to 1212424 its reverse (4242121), we get a palindrome (5454545).

The spelling of 1212424 in words is "one million, two hundred twelve thousand, four hundred twenty-four".