1213620424 has 16 divisors (see below), whose sum is σ = 2337039900. Its totient is φ = 590409792.

The previous prime is 1213620413. The next prime is 1213620451. The reversal of 1213620424 is 4240263121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1090188324 + 123432100 = 33018^2 + 11110^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2049739 + ... + 2050330.

Almost surely, 2^1213620424 is an apocalyptic number.

It is an amenable number.

1213620424 is a deficient number, since it is larger than the sum of its proper divisors (1123419476).

1213620424 is a wasteful number, since it uses less digits than its factorization.

1213620424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4100112 (or 4100108 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1213620424 is about 34837.0553290602. The cubic root of 1213620424 is about 1066.6639696980.

Adding to 1213620424 its reverse (4240263121), we get a palindrome (5453883545).

The spelling of 1213620424 in words is "one billion, two hundred thirteen million, six hundred twenty thousand, four hundred twenty-four".