212434134 has 48 divisors (see below), whose sum is σ = 482119680. Its totient is φ = 62290800.

The previous prime is 212434127. The next prime is 212434169. The reversal of 212434134 is 431434212.

It is a super-2 number, since 2×212434134² = 90256522576659912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17787 + ... + 27225.

It is an arithmetic number, because the mean of its divisors is an integer number (10044160).

Almost surely, 2^212434134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212434134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241059840).

212434134 is an abundant number, since it is smaller than the sum of its proper divisors (269685546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212434134 is a wasteful number, since it uses less digits than its factorization.

212434134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9497 (or 9486 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

The square root of 212434134 is about 14575.1203768614. The cubic root of 212434134 is about 596.6799347188.

Adding to 212434134 its reverse (431434212), we get a palindrome (643868346).

The spelling of 212434134 in words is "two hundred twelve million, four hundred thirty-four thousand, one hundred thirty-four".