214921642 has 8 divisors (see below), whose sum is σ = 347181156. Its totient is φ = 99194592.

The previous prime is 214921621. The next prime is 214921657. The reversal of 214921642 is 246129412.

It can be written as a sum of positive squares in 2 ways, for example, as 164070481 + 50851161 = 12809^2 + 7131^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4133083 + ... + 4133134.

Almost surely, 2^214921642 is an apocalyptic number.

214921642 is a deficient number, since it is larger than the sum of its proper divisors (132259514).

214921642 is a wasteful number, since it uses less digits than its factorization.

214921642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8266232.

The product of its digits is 6912, while the sum is 31.

The square root of 214921642 is about 14660.2060694930. The cubic root of 214921642 is about 598.9998541438. Note that the first 3 decimals are identical.

The spelling of 214921642 in words is "two hundred fourteen million, nine hundred twenty-one thousand, six hundred forty-two".