213071042 has 8 divisors (see below), whose sum is σ = 319693836. Its totient is φ = 106506432.

The previous prime is 213071041. The next prime is 213071059. The reversal of 213071042 is 240170312.

It can be written as a sum of positive squares in 2 ways, for example, as 190136521 + 22934521 = 13789^2 + 4789^2 .

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

It is not an unprimeable number, because it can be changed into a prime (213071041) by changing a digit.

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, 3803 + ... + 20990.

Almost surely, 2^213071042 is an apocalyptic number.

213071042 is a deficient number, since it is larger than the sum of its proper divisors (106622794).

213071042 is a wasteful number, since it uses less digits than its factorization.

213071042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29092.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 213071042 is about 14596.9531752349. The cubic root of 213071042 is about 597.2756504402.

The spelling of 213071042 in words is "two hundred thirteen million, seventy-one thousand, forty-two".