212435129 has 4 divisors (see below), whose sum is σ = 213738576. Its totient is φ = 211131684.

The previous prime is 212435117. The next prime is 212435161. The reversal of 212435129 is 921534212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212435129 - 2¹² = 212431033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212431129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651479 + ... + 651804.

It is an arithmetic number, because the mean of its divisors is an integer number (53434644).

Almost surely, 2^212435129 is an apocalyptic number.

It is an amenable number.

212435129 is a deficient number, since it is larger than the sum of its proper divisors (1303447).

212435129 is a wasteful number, since it uses less digits than its factorization.

212435129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303446.

The product of its digits is 4320, while the sum is 29.

The square root of 212435129 is about 14575.1545103302. The cubic root of 212435129 is about 596.6808662948.

The spelling of 212435129 in words is "two hundred twelve million, four hundred thirty-five thousand, one hundred twenty-nine".