212952842 has 4 divisors (see below), whose sum is σ = 319429266. Its totient is φ = 106476420.

The previous prime is 212952827. The next prime is 212952847. The reversal of 212952842 is 248259212.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 207331201 + 5621641 = 14399^2 + 2371^2 .

It is not an unprimeable number, because it can be changed into a prime (212952847) 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 as a sum of consecutive naturals, namely, 53238209 + ... + 53238212.

Almost surely, 2^212952842 is an apocalyptic number.

212952842 is a deficient number, since it is larger than the sum of its proper divisors (106476424).

212952842 is a wasteful number, since it uses less digits than its factorization.

212952842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106476423.

The product of its digits is 23040, while the sum is 35.

The square root of 212952842 is about 14592.9038234342. The cubic root of 212952842 is about 597.1651848730.

The spelling of 212952842 in words is "two hundred twelve million, nine hundred fifty-two thousand, eight hundred forty-two".