542690431 has 4 divisors (see below), whose sum is σ = 546963712. Its totient is φ = 538417152.

The previous prime is 542690389. The next prime is 542690441. The reversal of 542690431 is 134096245.

It is a happy number.

542690431 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, and also an emirpimes, since its reverse is a distinct semiprime: 134096245 = 5 ⋅26819249.

It is a cyclic number.

It is not a de Polignac number, because 542690431 - 2²¹ = 540593279 is a prime.

It is a super-2 number, since 2×542690431² = 589025807797931522, 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 (542690441) 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, 2136450 + ... + 2136703.

It is an arithmetic number, because the mean of its divisors is an integer number (136740928).

Almost surely, 2^542690431 is an apocalyptic number.

542690431 is a deficient number, since it is larger than the sum of its proper divisors (4273281).

542690431 is a wasteful number, since it uses less digits than its factorization.

542690431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4273280.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 542690431 is about 23295.7170097853. The cubic root of 542690431 is about 815.6754439249.

The spelling of 542690431 in words is "five hundred forty-two million, six hundred ninety thousand, four hundred thirty-one".