212504245042 has 4 divisors (see below), whose sum is σ = 318756367566. Its totient is φ = 106252122520.

The previous prime is 212504245013. The next prime is 212504245097. The reversal of 212504245042 is 240542405212.

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., 212411296161 + 92948881 = 460881^2 + 9641^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 212504244995 and 212504245013.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53126061259 + ... + 53126061262.

Almost surely, 2^212504245042 is an apocalyptic number.

212504245042 is a deficient number, since it is larger than the sum of its proper divisors (106252122524).

212504245042 is a wasteful number, since it uses less digits than its factorization.

212504245042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106252122523.

The product of its (nonzero) digits is 25600, while the sum is 31.

The spelling of 212504245042 in words is "two hundred twelve billion, five hundred four million, two hundred forty-five thousand, forty-two".