542143321 has 4 divisors (see below), whose sum is σ = 570677200. Its totient is φ = 513609444.

The previous prime is 542143253. The next prime is 542143331. The reversal of 542143321 is 123341245.

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.

It is not a de Polignac number, because 542143321 - 2⁷ = 542143193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542143331) 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, 14266911 + ... + 14266948.

It is an arithmetic number, because the mean of its divisors is an integer number (142669300).

Almost surely, 2^542143321 is an apocalyptic number.

It is an amenable number.

542143321 is a deficient number, since it is larger than the sum of its proper divisors (28533879).

542143321 is a wasteful number, since it uses less digits than its factorization.

542143321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28533878.

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

The square root of 542143321 is about 23283.9713322277. The cubic root of 542143321 is about 815.4012457099.

Adding to 542143321 its reverse (123341245), we get a palindrome (665484566).

The spelling of 542143321 in words is "five hundred forty-two million, one hundred forty-three thousand, three hundred twenty-one".