542310421 has 4 divisors (see below), whose sum is σ = 574211052. Its totient is φ = 510409792.

The previous prime is 542310409. The next prime is 542310427. The reversal of 542310421 is 124013245.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124013245 = 5 ⋅24802649.

It can be written as a sum of positive squares in 2 ways, for example, as 493506225 + 48804196 = 22215^2 + 6986^2 .

It is a cyclic number.

It is not a de Polignac number, because 542310421 - 2¹¹ = 542308373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 542310392 and 542310401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542310427) 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, 15950290 + ... + 15950323.

It is an arithmetic number, because the mean of its divisors is an integer number (143552763).

Almost surely, 2^542310421 is an apocalyptic number.

It is an amenable number.

542310421 is a deficient number, since it is larger than the sum of its proper divisors (31900631).

542310421 is a wasteful number, since it uses less digits than its factorization.

542310421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31900630.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 542310421 is about 23287.5593611696. The cubic root of 542310421 is about 815.4850117219.

Adding to 542310421 its reverse (124013245), we get a palindrome (666323666).

The spelling of 542310421 in words is "five hundred forty-two million, three hundred ten thousand, four hundred twenty-one".