542056243666 has 16 divisors (see below), whose sum is σ = 929390690304. Its totient is φ = 232271964864.

The previous prime is 542056243583. The next prime is 542056243693. The reversal of 542056243666 is 666342650245.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3065415 + ... + 3237418.

It is an arithmetic number, because the mean of its divisors is an integer number (58086918144).

Almost surely, 2^542056243666 is an apocalyptic number.

542056243666 is a deficient number, since it is larger than the sum of its proper divisors (387334446638).

542056243666 is a wasteful number, since it uses less digits than its factorization.

542056243666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6308985.

The product of its (nonzero) digits is 6220800, while the sum is 49.

The spelling of 542056243666 in words is "five hundred forty-two billion, fifty-six million, two hundred forty-three thousand, six hundred sixty-six".