214642155 has 32 divisors (see below), whose sum is σ = 422682624. Its totient is φ = 90573696.

The previous prime is 214642139. The next prime is 214642213. The reversal of 214642155 is 551246412.

It is not a de Polignac number, because 214642155 - 2⁴ = 214642139 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77259 + ... + 79988.

It is an arithmetic number, because the mean of its divisors is an integer number (13208832).

Almost surely, 2^214642155 is an apocalyptic number.

214642155 is a deficient number, since it is larger than the sum of its proper divisors (208040469).

214642155 is a wasteful number, since it uses less digits than its factorization.

214642155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157275.

The product of its digits is 9600, while the sum is 30.

The square root of 214642155 is about 14650.6708037550. The cubic root of 214642155 is about 598.7400923508.

Adding to 214642155 its reverse (551246412), we get a palindrome (765888567).

The spelling of 214642155 in words is "two hundred fourteen million, six hundred forty-two thousand, one hundred fifty-five".