213006191542 has 4 divisors (see below), whose sum is σ = 319509287316. Its totient is φ = 106503095770.

The previous prime is 213006191467. The next prime is 213006191561. The reversal of 213006191542 is 245191600312.

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

It is a junction number, because it is equal to n+sod(n) for n = 213006191498 and 213006191507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53251547884 + ... + 53251547887.

It is an arithmetic number, because the mean of its divisors is an integer number (79877321829).

Almost surely, 2^213006191542 is an apocalyptic number.

213006191542 is a deficient number, since it is larger than the sum of its proper divisors (106503095774).

213006191542 is a wasteful number, since it uses less digits than its factorization.

213006191542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106503095773.

The product of its (nonzero) digits is 12960, while the sum is 34.

Adding to 213006191542 its reverse (245191600312), we get a palindrome (458197791854).

The spelling of 213006191542 in words is "two hundred thirteen billion, six million, one hundred ninety-one thousand, five hundred forty-two".