542421432653 has 2 divisors, whose sum is σ = 542421432654. Its totient is φ = 542421432652.

The previous prime is 542421432647. The next prime is 542421432691. The reversal of 542421432653 is 356234124245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 535563439684 + 6857992969 = 731822^2 + 82813^2 .

It is a cyclic number.

It is not a de Polignac number, because 542421432653 - 2³⁶ = 473701955917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 542421432653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542421435653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271210716326 + 271210716327.

It is an arithmetic number, because the mean of its divisors is an integer number (271210716327).

Almost surely, 2^542421432653 is an apocalyptic number.

It is an amenable number.

542421432653 is a deficient number, since it is larger than the sum of its proper divisors (1).

542421432653 is an equidigital number, since it uses as much as digits as its factorization.

542421432653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 691200, while the sum is 41.

Adding to 542421432653 its reverse (356234124245), we get a palindrome (898655556898).

The spelling of 542421432653 in words is "five hundred forty-two billion, four hundred twenty-one million, four hundred thirty-two thousand, six hundred fifty-three".