255545121442 has 16 divisors (see below), whose sum is σ = 430751643840. Its totient is φ = 112815906192.

The previous prime is 255545121407. The next prime is 255545121457. The reversal of 255545121442 is 244121545552.

It is a junction number, because it is equal to n+sod(n) for n = 255545121395 and 255545121404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213665892 + ... + 213667087.

It is an arithmetic number, because the mean of its divisors is an integer number (26921977740).

Almost surely, 2^255545121442 is an apocalyptic number.

255545121442 is a deficient number, since it is larger than the sum of its proper divisors (175206522398).

255545121442 is a wasteful number, since it uses less digits than its factorization.

255545121442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427333017.

The product of its digits is 320000, while the sum is 40.

Adding to 255545121442 its reverse (244121545552), we get a palindrome (499666666994).

The spelling of 255545121442 in words is "two hundred fifty-five billion, five hundred forty-five million, one hundred twenty-one thousand, four hundred forty-two".