42554819 has 4 divisors (see below), whose sum is σ = 42568944. Its totient is φ = 42540696.

The previous prime is 42554801. The next prime is 42554833. The reversal of 42554819 is 91845524.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42554819 - 2¹² = 42550723 is a prime.

It is a super-2 number, since 2×42554819² = 3621825240245522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42554879) 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, 527 + ... + 9240.

It is an arithmetic number, because the mean of its divisors is an integer number (10642236).

Almost surely, 2^42554819 is an apocalyptic number.

42554819 is a deficient number, since it is larger than the sum of its proper divisors (14125).

42554819 is an equidigital number, since it uses as much as digits as its factorization.

42554819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14124.

The product of its digits is 57600, while the sum is 38.

The square root of 42554819 is about 6523.4054756699. The cubic root of 42554819 is about 349.1265813966.

The spelling of 42554819 in words is "forty-two million, five hundred fifty-four thousand, eight hundred nineteen".