1212001424 has 20 divisors (see below), whose sum is σ = 2349562044. Its totient is φ = 605662848.

The previous prime is 1212001409. The next prime is 1212001457. The reversal of 1212001424 is 4241002121.

It can be written as a sum of positive squares in 2 ways, for example, as 325153024 + 886848400 = 18032^2 + 29780^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9854 + ... + 50210.

Almost surely, 2^1212001424 is an apocalyptic number.

It is an amenable number.

1212001424 is a deficient number, since it is larger than the sum of its proper divisors (1137560620).

1212001424 is a wasteful number, since it uses less digits than its factorization.

1212001424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42242 (or 42236 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1212001424 is about 34813.8108227180. The cubic root of 1212001424 is about 1066.1894398191.

Adding to 1212001424 its reverse (4241002121), we get a palindrome (5453003545).

The spelling of 1212001424 in words is "one billion, two hundred twelve million, one thousand, four hundred twenty-four".