54042242 has 4 divisors (see below), whose sum is σ = 81063366. Its totient is φ = 27021120.

The previous prime is 54042229. The next prime is 54042257. The reversal of 54042242 is 24224045.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24224045 = 5 ⋅4844809.

It can be written as a sum of positive squares in only one way, i.e., 54037201 + 5041 = 7351^2 + 71^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13510559 + ... + 13510562.

Almost surely, 2^54042242 is an apocalyptic number.

54042242 is a deficient number, since it is larger than the sum of its proper divisors (27021124).

54042242 is a wasteful number, since it uses less digits than its factorization.

54042242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27021123.

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 54042242 is about 7351.3428705237. The cubic root of 54042242 is about 378.0748477709.

Adding to 54042242 its reverse (24224045), we get a palindrome (78266287).

The spelling of 54042242 in words is "fifty-four million, forty-two thousand, two hundred forty-two".