4209012 has 36 divisors (see below), whose sum is σ = 10890880. Its totient is φ = 1369872.

The previous prime is 4209011. The next prime is 4209017. The reversal of 4209012 is 2109024.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×4209012² = 35431564032288, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4209011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189 + ... + 2907.

Almost surely, 2^4209012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4209012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5445440).

4209012 is an abundant number, since it is smaller than the sum of its proper divisors (6681868).

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

4209012 is a wasteful number, since it uses less digits than its factorization.

4209012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772 (or 2767 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 4209012 is about 2051.5876778729. The cubic root of 4209012 is about 161.4581807264.

It can be divided in two parts, 420901 and 2, that added together give a triangular number (420903 = T₉₁₇).

The spelling of 4209012 in words is "four million, two hundred nine thousand, twelve".