75407422 has 4 divisors (see below), whose sum is σ = 113111136. Its totient is φ = 37703710.

The previous prime is 75407401. The next prime is 75407429. The reversal of 75407422 is 22470457.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22470457 = 263 ⋅85439.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75407429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18851854 + ... + 18851857.

It is an arithmetic number, because the mean of its divisors is an integer number (28277784).

Almost surely, 2^75407422 is an apocalyptic number.

75407422 is a deficient number, since it is larger than the sum of its proper divisors (37703714).

75407422 is a wasteful number, since it uses less digits than its factorization.

75407422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37703713.

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 75407422 is about 8683.7446991491. The cubic root of 75407422 is about 422.4785829976.

Adding to 75407422 its reverse (22470457), we get a palindrome (97877879).

The spelling of 75407422 in words is "seventy-five million, four hundred seven thousand, four hundred twenty-two".