2134204440 has 32 divisors (see below), whose sum is σ = 6402613680. Its totient is φ = 569121152.

The previous prime is 2134204439. The next prime is 2134204441. The reversal of 2134204440 is 444024312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2134204439) and next prime (2134204441).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2134204440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2134204441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8892399 + ... + 8892638.

Almost surely, 2^2134204440 is an apocalyptic number.

2134204440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2134204440 is an abundant number, since it is smaller than the sum of its proper divisors (4268409240).

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

2134204440 is a wasteful number, since it uses less digits than its factorization.

2134204440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17785051 (or 17785047 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 2134204440 is about 46197.4505790092. The cubic root of 2134204440 is about 1287.4943731805.

Adding to 2134204440 its reverse (444024312), we get a palindrome (2578228752).

The spelling of 2134204440 in words is "two billion, one hundred thirty-four million, two hundred four thousand, four hundred forty".