542236463621 has 2 divisors, whose sum is σ = 542236463622. Its totient is φ = 542236463620.

The previous prime is 542236463597. The next prime is 542236463647. The reversal of 542236463621 is 126364632245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 350730450625 + 191506012996 = 592225^2 + 437614^2 .

It is a cyclic number.

It is not a de Polignac number, because 542236463621 - 2²² = 542232269317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542236463651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271118231810 + 271118231811.

It is an arithmetic number, because the mean of its divisors is an integer number (271118231811).

Almost surely, 2^542236463621 is an apocalyptic number.

It is an amenable number.

542236463621 is a deficient number, since it is larger than the sum of its proper divisors (1).

542236463621 is an equidigital number, since it uses as much as digits as its factorization.

542236463621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 44.

The spelling of 542236463621 in words is "five hundred forty-two billion, two hundred thirty-six million, four hundred sixty-three thousand, six hundred twenty-one".