542009831 has 4 divisors (see below), whose sum is σ = 591283464. Its totient is φ = 492736200.

The previous prime is 542009801. The next prime is 542009849. The reversal of 542009831 is 138900245.

542009831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 542009831 - 2¹⁴ = 541993447 is a prime.

It is a super-2 number, since 2×542009831² = 587549313801297122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542009801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24636800 + ... + 24636821.

It is an arithmetic number, because the mean of its divisors is an integer number (147820866).

Almost surely, 2^542009831 is an apocalyptic number.

542009831 is a deficient number, since it is larger than the sum of its proper divisors (49273633).

542009831 is a wasteful number, since it uses less digits than its factorization.

542009831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49273632.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 542009831 is about 23281.1045914922. The cubic root of 542009831 is about 815.3343157776.

The spelling of 542009831 in words is "five hundred forty-two million, nine thousand, eight hundred thirty-one".