211000542 has 16 divisors (see below), whose sum is σ = 422873472. Its totient is φ = 70188120.

The previous prime is 211000541. The next prime is 211000609. The reversal of 211000542 is 245000112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211000541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33184 + ... + 39027.

It is an arithmetic number, because the mean of its divisors is an integer number (26429592).

Almost surely, 2^211000542 is an apocalyptic number.

211000542 is an abundant number, since it is smaller than the sum of its proper divisors (211872930).

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

211000542 is a wasteful number, since it uses less digits than its factorization.

211000542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72703.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 211000542 is about 14525.8577027314. The cubic root of 211000542 is about 595.3346910625.

Adding to 211000542 its reverse (245000112), we get a palindrome (456000654).

The spelling of 211000542 in words is "two hundred eleven million, five hundred forty-two", and thus it is an aban number.