5142145321 has 4 divisors (see below), whose sum is σ = 5142362512. Its totient is φ = 5141928132.

The previous prime is 5142145319. The next prime is 5142145381. The reversal of 5142145321 is 1235412415.

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: 1235412415 = 5 ⋅247082483.

It is a cyclic number.

It is not a de Polignac number, because 5142145321 - 2¹ = 5142145319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5142145321.

It is not an unprimeable number, because it can be changed into a prime (5142145301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68031 + ... + 122116.

It is an arithmetic number, because the mean of its divisors is an integer number (1285590628).

Almost surely, 2^5142145321 is an apocalyptic number.

It is an amenable number.

5142145321 is a deficient number, since it is larger than the sum of its proper divisors (217191).

5142145321 is a wasteful number, since it uses less digits than its factorization.

5142145321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217190.

The product of its digits is 4800, while the sum is 28.

The square root of 5142145321 is about 71708.7534475394. The cubic root of 5142145321 is about 1726.0291075279.

Adding to 5142145321 its reverse (1235412415), we get a palindrome (6377557736).

The spelling of 5142145321 in words is "five billion, one hundred forty-two million, one hundred forty-five thousand, three hundred twenty-one".