215188420142 has 16 divisors (see below), whose sum is σ = 323317792512. Its totient is φ = 107415947520.

The previous prime is 215188420129. The next prime is 215188420151. The reversal of 215188420142 is 241024881512.

215188420142 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 2×215188420142² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 215188420096 and 215188420105.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3588518 + ... + 3647990.

It is an arithmetic number, because the mean of its divisors is an integer number (20207362032).

Almost surely, 2^215188420142 is an apocalyptic number.

215188420142 is a deficient number, since it is larger than the sum of its proper divisors (108129372370).

215188420142 is a wasteful number, since it uses less digits than its factorization.

215188420142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62443.

The product of its (nonzero) digits is 40960, while the sum is 38.

The spelling of 215188420142 in words is "two hundred fifteen billion, one hundred eighty-eight million, four hundred twenty thousand, one hundred forty-two".