211642130 has 32 divisors (see below), whose sum is σ = 445509504. Its totient is φ = 70874496.

The previous prime is 211642117. The next prime is 211642141. The reversal of 211642130 is 31246112.

211642130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32147 + ... + 38166.

It is an arithmetic number, because the mean of its divisors is an integer number (13922172).

Almost surely, 2^211642130 is an apocalyptic number.

211642130 is an abundant number, since it is smaller than the sum of its proper divisors (233867374).

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

211642130 is a wasteful number, since it uses less digits than its factorization.

211642130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70370.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 211642130 is about 14547.9252816338. The cubic root of 211642130 is about 595.9374906290.

Adding to 211642130 its reverse (31246112), we get a palindrome (242888242).

The spelling of 211642130 in words is "two hundred eleven million, six hundred forty-two thousand, one hundred thirty".