212537434 has 16 divisors (see below), whose sum is σ = 352237248. Its totient is φ = 95668672.

The previous prime is 212537389. The next prime is 212537459. The reversal of 212537434 is 434735212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212537396 and 212537405.

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, 135112 + ... + 136675.

It is an arithmetic number, because the mean of its divisors is an integer number (22014828).

Almost surely, 2^212537434 is an apocalyptic number.

212537434 is a deficient number, since it is larger than the sum of its proper divisors (139699814).

212537434 is a wasteful number, since it uses less digits than its factorization.

212537434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271829.

The product of its digits is 20160, while the sum is 31.

The square root of 212537434 is about 14578.6636561792. The cubic root of 212537434 is about 596.7766345728.

The spelling of 212537434 in words is "two hundred twelve million, five hundred thirty-seven thousand, four hundred thirty-four".