216146542 has 8 divisors (see below), whose sum is σ = 324556632. Its totient is φ = 107961000.

The previous prime is 216146537. The next prime is 216146543. The reversal of 216146542 is 245641612.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216146543) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 53709 + ... + 57592.

It is an arithmetic number, because the mean of its divisors is an integer number (40569579).

Almost surely, 2^216146542 is an apocalyptic number.

216146542 is a deficient number, since it is larger than the sum of its proper divisors (108410090).

216146542 is a wasteful number, since it uses less digits than its factorization.

216146542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112274.

The product of its digits is 11520, while the sum is 31.

The square root of 216146542 is about 14701.9230714897. The cubic root of 216146542 is about 600.1356563636.

The spelling of 216146542 in words is "two hundred sixteen million, one hundred forty-six thousand, five hundred forty-two".