542643406 has 16 divisors (see below), whose sum is σ = 862934400. Its totient is φ = 255471840.

The previous prime is 542643403. The next prime is 542643419. The reversal of 542643406 is 604346245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542643403) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 115981 + ... + 120568.

It is an arithmetic number, because the mean of its divisors is an integer number (53933400).

Almost surely, 2^542643406 is an apocalyptic number.

542643406 is a deficient number, since it is larger than the sum of its proper divisors (320290994).

542643406 is a wasteful number, since it uses less digits than its factorization.

542643406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236619.

The product of its (nonzero) digits is 69120, while the sum is 34.

The square root of 542643406 is about 23294.7076822183. The cubic root of 542643406 is about 815.6518833806.

It can be divided in two parts, 5426 and 43406, that multiplied together give a triangular number (235520956 = T₂₁₇₀₃).

The spelling of 542643406 in words is "five hundred forty-two million, six hundred forty-three thousand, four hundred six".