212465137 has 8 divisors (see below), whose sum is σ = 218389952. Its totient is φ = 206550000.

The previous prime is 212465119. The next prime is 212465159. The reversal of 212465137 is 731564212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212465137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212465099 and 212465108.

It is not an unprimeable number, because it can be changed into a prime (212465177) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 82012 + ... + 84562.

It is an arithmetic number, because the mean of its divisors is an integer number (27298744).

Almost surely, 2^212465137 is an apocalyptic number.

It is an amenable number.

212465137 is a deficient number, since it is larger than the sum of its proper divisors (5924815).

212465137 is a wasteful number, since it uses less digits than its factorization.

212465137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4839.

The product of its digits is 10080, while the sum is 31.

The square root of 212465137 is about 14576.1838970287. The cubic root of 212465137 is about 596.7089601361.

The spelling of 212465137 in words is "two hundred twelve million, four hundred sixty-five thousand, one hundred thirty-seven".