211542114 has 48 divisors (see below), whose sum is σ = 495402048. Its totient is φ = 60042528.

The previous prime is 211542113. The next prime is 211542137. The reversal of 211542114 is 411245112.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (211542113) 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 23 ways as a sum of consecutive naturals, for example, 43867 + ... + 48449.

It is an arithmetic number, because the mean of its divisors is an integer number (10320876).

Almost surely, 2^211542114 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211542114, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247701024).

211542114 is an abundant number, since it is smaller than the sum of its proper divisors (283859934).

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

211542114 is a wasteful number, since it uses less digits than its factorization.

211542114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4759 (or 4752 counting only the distinct ones).

The product of its digits is 320, while the sum is 21.

The square root of 211542114 is about 14544.4874093245. The cubic root of 211542114 is about 595.8436015161.

Adding to 211542114 its reverse (411245112), we get a palindrome (622787226).

The spelling of 211542114 in words is "two hundred eleven million, five hundred forty-two thousand, one hundred fourteen".