215355042 has 48 divisors (see below), whose sum is σ = 546279552. Its totient is φ = 60027840.

The previous prime is 215355029. The next prime is 215355089. The reversal of 215355042 is 240553512.

It is a happy number.

215355042 is a `hidden beast` number, since 2 + 153 + 5 + 504 + 2 = 666.

It is a super-2 number, since 2×215355042² = 92755588229643528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 215354997 and 215355015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15678 + ... + 26009.

It is an arithmetic number, because the mean of its divisors is an integer number (11380824).

Almost surely, 2^215355042 is an apocalyptic number.

215355042 is an abundant number, since it is smaller than the sum of its proper divisors (330924510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215355042 is a wasteful number, since it uses less digits than its factorization.

215355042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41743 (or 41740 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 215355042 is about 14674.9801362728. The cubic root of 215355042 is about 599.4022212988.

The spelling of 215355042 in words is "two hundred fifteen million, three hundred fifty-five thousand, forty-two".