55124140442 has 24 divisors (see below), whose sum is σ = 96310564596. Its totient is φ = 23594036928.

The previous prime is 55124140417. The next prime is 55124140453. The reversal of 55124140442 is 24404142155.

It can be written as a sum of positive squares in 2 ways, for example, as 54358456201 + 765684241 = 233149^2 + 27671^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55124140399 and 55124140408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 288083 + ... + 439590.

Almost surely, 2^55124140442 is an apocalyptic number.

55124140442 is a deficient number, since it is larger than the sum of its proper divisors (41186424154).

55124140442 is a wasteful number, since it uses less digits than its factorization.

55124140442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728462 (or 728455 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

Adding to 55124140442 its reverse (24404142155), we get a palindrome (79528282597).

The spelling of 55124140442 in words is "fifty-five billion, one hundred twenty-four million, one hundred forty thousand, four hundred forty-two".