42215005121255 has 16 divisors (see below), whose sum is σ = 50847801939360. Its totient is φ = 33645700128768.

The previous prime is 42215005121213. The next prime is 42215005121293. The reversal of 42215005121255 is 55212150051224.

It is a cyclic number.

It is not a de Polignac number, because 42215005121255 - 2⁴⁰ = 41115493493479 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12668810 + ... + 15650199.

It is an arithmetic number, because the mean of its divisors is an integer number (3177987621210).

Almost surely, 2^{42215005121255} is an apocalyptic number.

42215005121255 is a deficient number, since it is larger than the sum of its proper divisors (8632796818105).

42215005121255 is a wasteful number, since it uses less digits than its factorization.

42215005121255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28320130.

The product of its (nonzero) digits is 40000, while the sum is 35.

Adding to 42215005121255 its reverse (55212150051224), we get a palindrome (97427155172479).

The spelling of 42215005121255 in words is "forty-two trillion, two hundred fifteen billion, five million, one hundred twenty-one thousand, two hundred fifty-five".