542521124989 has 2 divisors, whose sum is σ = 542521124990. Its totient is φ = 542521124988.

The previous prime is 542521124983. The next prime is 542521125031. The reversal of 542521124989 is 989421125245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 501044544025 + 41476580964 = 707845^2 + 203658^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542521124989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542521124983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271260562494 + 271260562495.

It is an arithmetic number, because the mean of its divisors is an integer number (271260562495).

Almost surely, 2^542521124989 is an apocalyptic number.

It is an amenable number.

542521124989 is a deficient number, since it is larger than the sum of its proper divisors (1).

542521124989 is an equidigital number, since it uses as much as digits as its factorization.

542521124989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2073600, while the sum is 52.

The spelling of 542521124989 in words is "five hundred forty-two billion, five hundred twenty-one million, one hundred twenty-four thousand, nine hundred eighty-nine".