75421102 has 4 divisors (see below), whose sum is σ = 113131656. Its totient is φ = 37710550.

The previous prime is 75421081. The next prime is 75421139. The reversal of 75421102 is 20112457.

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: 20112457 = 29 ⋅693533.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18855274 + ... + 18855277.

It is an arithmetic number, because the mean of its divisors is an integer number (28282914).

Almost surely, 2^75421102 is an apocalyptic number.

75421102 is a deficient number, since it is larger than the sum of its proper divisors (37710554).

75421102 is a wasteful number, since it uses less digits than its factorization.

75421102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37710553.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 75421102 is about 8684.5323420435. The cubic root of 75421102 is about 422.5041293669.

Adding to 75421102 its reverse (20112457), we get a palindrome (95533559).

The spelling of 75421102 in words is "seventy-five million, four hundred twenty-one thousand, one hundred two".