3534243021 has 12 divisors (see below), whose sum is σ = 5281053180. Its totient is φ = 2274914880.

The previous prime is 3534243007. The next prime is 3534243023. The reversal of 3534243021 is 1203424353.

3534243021 is a `hidden beast` number, since 353 + 4 + 2 + 4 + 302 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1037741796 + 2496501225 = 32214^2 + 49965^2 .

It is not a de Polignac number, because 3534243021 - 2¹³ = 3534234829 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3534243023) 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, 6770320 + ... + 6770841.

It is an arithmetic number, because the mean of its divisors is an integer number (440087765).

Almost surely, 2^3534243021 is an apocalyptic number.

It is an amenable number.

3534243021 is a deficient number, since it is larger than the sum of its proper divisors (1746810159).

3534243021 is a wasteful number, since it uses less digits than its factorization.

3534243021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13541196 (or 13541193 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 3534243021 is about 59449.4997539929. The cubic root of 3534243021 is about 1523.2299478899.

Adding to 3534243021 its reverse (1203424353), we get a palindrome (4737667374).

The spelling of 3534243021 in words is "three billion, five hundred thirty-four million, two hundred forty-three thousand, twenty-one".