211120542 has 48 divisors (see below), whose sum is σ = 482047488. Its totient is φ = 66646800.

The previous prime is 211120537. The next prime is 211120589. The reversal of 211120542 is 245021112.

211120542 is a `hidden beast` number, since 2 + 1 + 1 + 120 + 542 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40167 + ... + 45117.

It is an arithmetic number, because the mean of its divisors is an integer number (10042656).

Almost surely, 2^211120542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211120542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241023744).

211120542 is an abundant number, since it is smaller than the sum of its proper divisors (270926946).

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

211120542 is a wasteful number, since it uses less digits than its factorization.

211120542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5085 (or 5082 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 211120542 is about 14529.9876806555. The cubic root of 211120542 is about 595.4475290413.

Adding to 211120542 its reverse (245021112), we get a palindrome (456141654).

The spelling of 211120542 in words is "two hundred eleven million, one hundred twenty thousand, five hundred forty-two".