75421433 has 4 divisors (see below), whose sum is σ = 75838308. Its totient is φ = 75004560.

The previous prime is 75421421. The next prime is 75421453. The reversal of 75421433 is 33412457.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33412457 = 13 ⋅2570189.

It can be written as a sum of positive squares in 2 ways, for example, as 15389929 + 60031504 = 3923^2 + 7748^2 .

It is a cyclic number.

It is not a de Polignac number, because 75421433 - 2¹² = 75417337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75421396 and 75421405.

It is not an unprimeable number, because it can be changed into a prime (75421453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208166 + ... + 208527.

It is an arithmetic number, because the mean of its divisors is an integer number (18959577).

Almost surely, 2^75421433 is an apocalyptic number.

It is an amenable number.

75421433 is a deficient number, since it is larger than the sum of its proper divisors (416875).

75421433 is a wasteful number, since it uses less digits than its factorization.

75421433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416874.

The product of its digits is 10080, while the sum is 29.

The square root of 75421433 is about 8684.5513988922. The cubic root of 75421433 is about 422.5047474462.

The spelling of 75421433 in words is "seventy-five million, four hundred twenty-one thousand, four hundred thirty-three".