4153123421 has 4 divisors (see below), whose sum is σ = 4153392672. Its totient is φ = 4152854172.

The previous prime is 4153123411. The next prime is 4153123459. The reversal of 4153123421 is 1243213514.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1243213514 = 2 ⋅621606757.

It is a cyclic number.

It is not a de Polignac number, because 4153123421 - 2¹⁴ = 4153107037 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 (4153123411) 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, 109985 + ... + 142838.

It is an arithmetic number, because the mean of its divisors is an integer number (1038348168).

Almost surely, 2^4153123421 is an apocalyptic number.

It is an amenable number.

4153123421 is a deficient number, since it is larger than the sum of its proper divisors (269251).

4153123421 is a wasteful number, since it uses less digits than its factorization.

4153123421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269250.

The product of its digits is 2880, while the sum is 26.

The square root of 4153123421 is about 64444.7315224449. The cubic root of 4153123421 is about 1607.4036339788.

Adding to 4153123421 its reverse (1243213514), we get a palindrome (5396336935).

The spelling of 4153123421 in words is "four billion, one hundred fifty-three million, one hundred twenty-three thousand, four hundred twenty-one".