211232542 has 4 divisors (see below), whose sum is σ = 316848816. Its totient is φ = 105616270.

The previous prime is 211232521. The next prime is 211232563. The reversal of 211232542 is 245232112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (211232521) and next prime (211232563).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52808134 + ... + 52808137.

It is an arithmetic number, because the mean of its divisors is an integer number (79212204).

Almost surely, 2^211232542 is an apocalyptic number.

211232542 is a deficient number, since it is larger than the sum of its proper divisors (105616274).

211232542 is a wasteful number, since it uses less digits than its factorization.

211232542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105616273.

The product of its digits is 960, while the sum is 22.

The square root of 211232542 is about 14533.8412678823. The cubic root of 211232542 is about 595.5528059177.

Adding to 211232542 its reverse (245232112), we get a palindrome (456464654).

The spelling of 211232542 in words is "two hundred eleven million, two hundred thirty-two thousand, five hundred forty-two".