54135442 has 4 divisors (see below), whose sum is σ = 81203166. Its totient is φ = 27067720.

The previous prime is 54135439. The next prime is 54135449. The reversal of 54135442 is 24453145.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24453145 = 5 ⋅4890629.

It can be written as a sum of positive squares in only one way, i.e., 53714241 + 421201 = 7329^2 + 649^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 54135442.

It is not an unprimeable number, because it can be changed into a prime (54135449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13533859 + ... + 13533862.

Almost surely, 2^54135442 is an apocalyptic number.

54135442 is a deficient number, since it is larger than the sum of its proper divisors (27067724).

54135442 is a wasteful number, since it uses less digits than its factorization.

54135442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27067723.

The product of its digits is 9600, while the sum is 28.

The square root of 54135442 is about 7357.6791177653. The cubic root of 54135442 is about 378.2920626620.

Adding to 54135442 its reverse (24453145), we get a palindrome (78588587).

The spelling of 54135442 in words is "fifty-four million, one hundred thirty-five thousand, four hundred forty-two".