612236242 has 8 divisors (see below), whose sum is σ = 922473216. Its totient is φ = 304745172.

The previous prime is 612236239. The next prime is 612236269. The reversal of 612236242 is 242632216.

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

It is a self number, because there is not a number n which added to its sum of digits gives 612236242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685918 + ... + 686809.

It is an arithmetic number, because the mean of its divisors is an integer number (115309152).

Almost surely, 2^612236242 is an apocalyptic number.

612236242 is a deficient number, since it is larger than the sum of its proper divisors (310236974).

612236242 is a wasteful number, since it uses less digits than its factorization.

612236242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372952.

The product of its digits is 6912, while the sum is 28.

The square root of 612236242 is about 24743.4080514387. The cubic root of 612236242 is about 849.1277058252.

Adding to 612236242 its reverse (242632216), we get a palindrome (854868458).

The spelling of 612236242 in words is "six hundred twelve million, two hundred thirty-six thousand, two hundred forty-two".