75421238 has 4 divisors (see below), whose sum is σ = 113131860. Its totient is φ = 37710618.

The previous prime is 75421237. The next prime is 75421249. The reversal of 75421238 is 83212457.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83212457 = 19 ⋅4379603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75421237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18855308 + ... + 18855311.

It is an arithmetic number, because the mean of its divisors is an integer number (28282965).

Almost surely, 2^75421238 is an apocalyptic number.

75421238 is a deficient number, since it is larger than the sum of its proper divisors (37710622).

75421238 is a wasteful number, since it uses less digits than its factorization.

75421238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37710621.

The product of its digits is 13440, while the sum is 32.

The square root of 75421238 is about 8684.5401720529. The cubic root of 75421238 is about 422.5043833211.

It can be divided in two parts, 7 and 5421238, that added together give a palindrome (5421245).

The spelling of 75421238 in words is "seventy-five million, four hundred twenty-one thousand, two hundred thirty-eight".