243402012 has 54 divisors (see below), whose sum is σ = 715723008. Its totient is φ = 69542928.

The previous prime is 243402001. The next prime is 243402041. The reversal of 243402012 is 210204342.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 67228 + ... + 70755.

Almost surely, 2^243402012 is an apocalyptic number.

It is an amenable number.

243402012 is an abundant number, since it is smaller than the sum of its proper divisors (472320996).

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

243402012 is a wasteful number, since it uses less digits than its factorization.

243402012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138007 (or 137995 counting only the distinct ones).

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

The square root of 243402012 is about 15601.3464803523. The cubic root of 243402012 is about 624.3690802254.

Adding to 243402012 its reverse (210204342), we get a palindrome (453606354).

The spelling of 243402012 in words is "two hundred forty-three million, four hundred two thousand, twelve".