2142404340 has 48 divisors (see below), whose sum is σ = 6160866432. Its totient is φ = 555866496.

The previous prime is 2142404333. The next prime is 2142404419. The reversal of 2142404340 is 434042412.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2142404340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 480304 + ... + 484743.

It is an arithmetic number, because the mean of its divisors is an integer number (128351384).

Almost surely, 2^2142404340 is an apocalyptic number.

2142404340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2142404340 is an abundant number, since it is smaller than the sum of its proper divisors (4018462092).

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

2142404340 is a wasteful number, since it uses less digits than its factorization.

2142404340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965096 (or 965094 counting only the distinct ones).

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

The square root of 2142404340 is about 46286.1139003913. The cubic root of 2142404340 is about 1289.1411746480.

Adding to 2142404340 its reverse (434042412), we get a palindrome (2576446752).

The spelling of 2142404340 in words is "two billion, one hundred forty-two million, four hundred four thousand, three hundred forty".