213140542 has 8 divisors (see below), whose sum is σ = 321318000. Its totient is φ = 106034544.

The previous prime is 213140519. The next prime is 213140561. The reversal of 213140542 is 245041312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 267367 + ... + 268162.

It is an arithmetic number, because the mean of its divisors is an integer number (40164750).

Almost surely, 2^213140542 is an apocalyptic number.

213140542 is a deficient number, since it is larger than the sum of its proper divisors (108177458).

213140542 is a wasteful number, since it uses less digits than its factorization.

213140542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535730.

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

The square root of 213140542 is about 14599.3336149291. Note that the first 3 decimals coincide. The cubic root of 213140542 is about 597.3405836268.

Adding to 213140542 its reverse (245041312), we get a palindrome (458181854).

The spelling of 213140542 in words is "two hundred thirteen million, one hundred forty thousand, five hundred forty-two".