542421246139 has 2 divisors, whose sum is σ = 542421246140. Its totient is φ = 542421246138.

The previous prime is 542421246121. The next prime is 542421246161. The reversal of 542421246139 is 931642124245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 542421246139 - 2⁷ = 542421246011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 542421246095 and 542421246104.

It is not a weakly prime, because it can be changed into another prime (542421246739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271210623069 + 271210623070.

It is an arithmetic number, because the mean of its divisors is an integer number (271210623070).

Almost surely, 2^542421246139 is an apocalyptic number.

542421246139 is a deficient number, since it is larger than the sum of its proper divisors (1).

542421246139 is an equidigital number, since it uses as much as digits as its factorization.

542421246139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 43.

The spelling of 542421246139 in words is "five hundred forty-two billion, four hundred twenty-one million, two hundred forty-six thousand, one hundred thirty-nine".