542271031 has 4 divisors (see below), whose sum is σ = 547861552. Its totient is φ = 536680512.

The previous prime is 542271019. The next prime is 542271061. The reversal of 542271031 is 130172245.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 542271031 - 2²³ = 533882423 is a prime.

It is a super-2 number, since 2×542271031² = 588115742123605922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 542270987 and 542271005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542271061) 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 in 3 ways as a sum of consecutive naturals, for example, 2795115 + ... + 2795308.

It is an arithmetic number, because the mean of its divisors is an integer number (136965388).

Almost surely, 2^542271031 is an apocalyptic number.

542271031 is a deficient number, since it is larger than the sum of its proper divisors (5590521).

542271031 is an equidigital number, since it uses as much as digits as its factorization.

542271031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5590520.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 542271031 is about 23286.7136152786. The cubic root of 542271031 is about 815.4652673522.

The spelling of 542271031 in words is "five hundred forty-two million, two hundred seventy-one thousand, thirty-one".