542105206 has 4 divisors (see below), whose sum is σ = 813157812. Its totient is φ = 271052602.

The previous prime is 542105173. The next prime is 542105219. The reversal of 542105206 is 602501245.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135526300 + ... + 135526303.

It is an arithmetic number, because the mean of its divisors is an integer number (203289453).

Almost surely, 2^542105206 is an apocalyptic number.

542105206 is a deficient number, since it is larger than the sum of its proper divisors (271052606).

542105206 is a wasteful number, since it uses less digits than its factorization.

542105206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271052605.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 542105206 is about 23283.1528363321. The cubic root of 542105206 is about 815.3821365275.

The spelling of 542105206 in words is "five hundred forty-two million, one hundred five thousand, two hundred six".