3420123533 has 4 divisors (see below), whose sum is σ = 3420240540. Its totient is φ = 3420006528.

The previous prime is 3420123523. The next prime is 3420123559. The reversal of 3420123533 is 3353210243.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3353210243 = 1381 ⋅2428103.

It can be written as a sum of positive squares in 2 ways, for example, as 490932649 + 2929190884 = 22157^2 + 54122^2 .

It is a cyclic number.

It is not a de Polignac number, because 3420123533 - 2¹⁶ = 3420057997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3420123523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26891 + ... + 86967.

It is an arithmetic number, because the mean of its divisors is an integer number (855060135).

Almost surely, 2^3420123533 is an apocalyptic number.

It is an amenable number.

3420123533 is a deficient number, since it is larger than the sum of its proper divisors (117007).

3420123533 is an equidigital number, since it uses as much as digits as its factorization.

3420123533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117006.

The product of its (nonzero) digits is 6480, while the sum is 26.

The square root of 3420123533 is about 58481.8222441811. The cubic root of 3420123533 is about 1506.6553946597.

Adding to 3420123533 its reverse (3353210243), we get a palindrome (6773333776).

The spelling of 3420123533 in words is "three billion, four hundred twenty million, one hundred twenty-three thousand, five hundred thirty-three".