2143342405 has 16 divisors (see below), whose sum is σ = 2866639680. Its totient is φ = 1528872192.

The previous prime is 2143342381. The next prime is 2143342447. The reversal of 2143342405 is 5042433412.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2143342405 - 2⁷ = 2143342277 is a prime.

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, 661959 + ... + 665188.

It is an arithmetic number, because the mean of its divisors is an integer number (179164980).

Almost surely, 2^2143342405 is an apocalyptic number.

It is an amenable number.

2143342405 is a deficient number, since it is larger than the sum of its proper divisors (723297275).

2143342405 is a wasteful number, since it uses less digits than its factorization.

2143342405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327188.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 2143342405 is about 46296.2461221210. The cubic root of 2143342405 is about 1289.3293000074.

Adding to 2143342405 its reverse (5042433412), we get a palindrome (7185775817).

The spelling of 2143342405 in words is "two billion, one hundred forty-three million, three hundred forty-two thousand, four hundred five".