542421362123 has 4 divisors (see below), whose sum is σ = 544060097688. Its totient is φ = 540782626560.

The previous prime is 542421362059. The next prime is 542421362143. The reversal of 542421362123 is 321263124245.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 542421362123 - 2⁶ = 542421362059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542421362143) 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, 819367286 + ... + 819367947.

It is an arithmetic number, because the mean of its divisors is an integer number (136015024422).

Almost surely, 2^542421362123 is an apocalyptic number.

542421362123 is a deficient number, since it is larger than the sum of its proper divisors (1638735565).

542421362123 is a wasteful number, since it uses less digits than its factorization.

542421362123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638735564.

The product of its digits is 69120, while the sum is 35.

Adding to 542421362123 its reverse (321263124245), we get a palindrome (863684486368).

The spelling of 542421362123 in words is "five hundred forty-two billion, four hundred twenty-one million, three hundred sixty-two thousand, one hundred twenty-three".