2121403534 has 8 divisors (see below), whose sum is σ = 3291833160. Its totient is φ = 1024125816.

The previous prime is 2121403517. The next prime is 2121403541. The reversal of 2121403534 is 4353041212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2121403499 and 2121403508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18287904 + ... + 18288019.

It is an arithmetic number, because the mean of its divisors is an integer number (411479145).

Almost surely, 2^2121403534 is an apocalyptic number.

2121403534 is a deficient number, since it is larger than the sum of its proper divisors (1170429626).

2121403534 is a wasteful number, since it uses less digits than its factorization.

2121403534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36575954.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2121403534 is about 46058.6966163829. The cubic root of 2121403534 is about 1284.9150895460.

Adding to 2121403534 its reverse (4353041212), we get a palindrome (6474444746).

The spelling of 2121403534 in words is "two billion, one hundred twenty-one million, four hundred three thousand, five hundred thirty-four".