542943406 has 4 divisors (see below), whose sum is σ = 814415112. Its totient is φ = 271471702.

The previous prime is 542943403. The next prime is 542943431. The reversal of 542943406 is 604349245.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542943403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135735850 + ... + 135735853.

It is an arithmetic number, because the mean of its divisors is an integer number (203603778).

Almost surely, 2^542943406 is an apocalyptic number.

542943406 is a deficient number, since it is larger than the sum of its proper divisors (271471706).

542943406 is a wasteful number, since it uses less digits than its factorization.

542943406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271471705.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 542943406 is about 23301.1460233183. The cubic root of 542943406 is about 815.8021665334.

The spelling of 542943406 in words is "five hundred forty-two million, nine hundred forty-three thousand, four hundred six".