75329421 has 16 divisors (see below), whose sum is σ = 103177536. Its totient is φ = 48859776.

The previous prime is 75329417. The next prime is 75329437. The reversal of 75329421 is 12492357.

It is not a de Polignac number, because 75329421 - 2² = 75329417 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75329021) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 36801 + ... + 38793.

It is an arithmetic number, because the mean of its divisors is an integer number (6448596).

Almost surely, 2^75329421 is an apocalyptic number.

It is an amenable number.

75329421 is a deficient number, since it is larger than the sum of its proper divisors (27848115).

75329421 is a wasteful number, since it uses less digits than its factorization.

75329421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332.

The product of its digits is 15120, while the sum is 33.

The square root of 75329421 is about 8679.2523295501. The cubic root of 75329421 is about 422.3328629433.

The spelling of 75329421 in words is "seventy-five million, three hundred twenty-nine thousand, four hundred twenty-one".