542512905 has 16 divisors (see below), whose sum is σ = 946931904. Its totient is φ = 263036480.

The previous prime is 542512879. The next prime is 542512913. The reversal of 542512905 is 509215245.

It is not a de Polignac number, because 542512905 - 2⁷ = 542512777 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1643814 + ... + 1644143.

It is an arithmetic number, because the mean of its divisors is an integer number (59183244).

Almost surely, 2^542512905 is an apocalyptic number.

542512905 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

542512905 is a deficient number, since it is larger than the sum of its proper divisors (404418999).

542512905 is a wasteful number, since it uses less digits than its factorization.

542512905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3287976.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 542512905 is about 23291.9064269115. The cubic root of 542512905 is about 815.5864924202.

The spelling of 542512905 in words is "five hundred forty-two million, five hundred twelve thousand, nine hundred five".