542023555 has 4 divisors (see below), whose sum is σ = 650428272. Its totient is φ = 433618840.

The previous prime is 542023553. The next prime is 542023571. The reversal of 542023555 is 555320245.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555320245 = 5 ⋅111064049.

It is not a de Polignac number, because 542023555 - 2¹ = 542023553 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542023553) 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, 54202351 + ... + 54202360.

It is an arithmetic number, because the mean of its divisors is an integer number (162607068).

Almost surely, 2^542023555 is an apocalyptic number.

542023555 is a deficient number, since it is larger than the sum of its proper divisors (108404717).

542023555 is a wasteful number, since it uses less digits than its factorization.

542023555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108404716.

The product of its (nonzero) digits is 30000, while the sum is 31.

The square root of 542023555 is about 23281.3993350915. The cubic root of 542023555 is about 815.3411972972.

The spelling of 542023555 in words is "five hundred forty-two million, twenty-three thousand, five hundred fifty-five".