53750042 has 4 divisors (see below), whose sum is σ = 80625066. Its totient is φ = 26875020.

The previous prime is 53750033. The next prime is 53750101. The reversal of 53750042 is 24005735.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 53158681 + 591361 = 7291^2 + 769^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53749993 and 53750020.

It is an unprimeable number.

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, 13437509 + ... + 13437512.

Almost surely, 2^53750042 is an apocalyptic number.

53750042 is a deficient number, since it is larger than the sum of its proper divisors (26875024).

53750042 is a wasteful number, since it uses less digits than its factorization.

53750042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26875023.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 53750042 is about 7331.4420136833. The cubic root of 53750042 is about 377.3922140118.

Adding to 53750042 its reverse (24005735), we get a palindrome (77755777).

The spelling of 53750042 in words is "fifty-three million, seven hundred fifty thousand, forty-two".