542191213451 has 2 divisors, whose sum is σ = 542191213452. Its totient is φ = 542191213450.

The previous prime is 542191213363. The next prime is 542191213463. The reversal of 542191213451 is 154312191245.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542191213451 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (542191213471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271095606725 + 271095606726.

It is an arithmetic number, because the mean of its divisors is an integer number (271095606726).

Almost surely, 2^542191213451 is an apocalyptic number.

542191213451 is a deficient number, since it is larger than the sum of its proper divisors (1).

542191213451 is an equidigital number, since it uses as much as digits as its factorization.

542191213451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 38.

The spelling of 542191213451 in words is "five hundred forty-two billion, one hundred ninety-one million, two hundred thirteen thousand, four hundred fifty-one".