212043402 has 24 divisors (see below), whose sum is σ = 460193760. Its totient is φ = 70563240.

The previous prime is 212043383. The next prime is 212043427. The reversal of 212043402 is 204340212.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 1627 + ... + 20657.

It is an arithmetic number, because the mean of its divisors is an integer number (19174740).

Almost surely, 2^212043402 is an apocalyptic number.

212043402 is an abundant number, since it is smaller than the sum of its proper divisors (248150358).

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

212043402 is a wasteful number, since it uses less digits than its factorization.

212043402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19658 (or 19655 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 212043402 is about 14561.7101330853. The cubic root of 212043402 is about 596.3138839558.

Adding to 212043402 its reverse (204340212), we get a palindrome (416383614).

The spelling of 212043402 in words is "two hundred twelve million, forty-three thousand, four hundred two".