212761234 has 24 divisors (see below), whose sum is σ = 372025548. Its totient is φ = 90992160.

The previous prime is 212761223. The next prime is 212761253. The reversal of 212761234 is 432167212.

It can be written as a sum of positive squares in 2 ways, for example, as 208947025 + 3814209 = 14455^2 + 1953^2 .

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51012 + ... + 55024.

Almost surely, 2^212761234 is an apocalyptic number.

212761234 is a deficient number, since it is larger than the sum of its proper divisors (159264314).

212761234 is a wasteful number, since it uses less digits than its factorization.

212761234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4570 (or 4563 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 212761234 is about 14586.3372372916. The cubic root of 212761234 is about 596.9860278971.

The spelling of 212761234 in words is "two hundred twelve million, seven hundred sixty-one thousand, two hundred thirty-four".