215127704256242 has 16 divisors (see below), whose sum is σ = 323356954241664. Its totient is φ = 107342063934000.

The previous prime is 215127704256233. The next prime is 215127704256253. The reversal of 215127704256242 is 242652407721512.

215127704256242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×215127704256242² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36321992 + ... + 41827532.

It is an arithmetic number, because the mean of its divisors is an integer number (20209809640104).

Almost surely, 2^{215127704256242} is an apocalyptic number.

215127704256242 is a deficient number, since it is larger than the sum of its proper divisors (108229249985422).

215127704256242 is a wasteful number, since it uses less digits than its factorization.

215127704256242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5545825.

The product of its (nonzero) digits is 3763200, while the sum is 50.

The spelling of 215127704256242 in words is "two hundred fifteen trillion, one hundred twenty-seven billion, seven hundred four million, two hundred fifty-six thousand, two hundred forty-two".