212042465 has 8 divisors (see below), whose sum is σ = 254678568. Its totient is φ = 169482240.

The previous prime is 212042459. The next prime is 212042477. The reversal of 212042465 is 564240212.

It can be written as a sum of positive squares in 4 ways, for example, as 3268864 + 208773601 = 1808^2 + 14449^2 .

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

It is not a de Polignac number, because 212042465 - 2¹⁰ = 212041441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12626 + ... + 24155.

It is an arithmetic number, because the mean of its divisors is an integer number (31834821).

Almost surely, 2^212042465 is an apocalyptic number.

It is an amenable number.

212042465 is a deficient number, since it is larger than the sum of its proper divisors (42636103).

212042465 is a wasteful number, since it uses less digits than its factorization.

212042465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37939.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 212042465 is about 14561.6779596309. The cubic root of 212042465 is about 596.3130056027.

Adding to 212042465 its reverse (564240212), we get a palindrome (776282677).

The spelling of 212042465 in words is "two hundred twelve million, forty-two thousand, four hundred sixty-five".