75143406 has 32 divisors (see below), whose sum is σ = 165801888. Its totient is φ = 22556160.

The previous prime is 75143389. The next prime is 75143407. The reversal of 75143406 is 60434157.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75143407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8551 + ... + 14946.

It is an arithmetic number, because the mean of its divisors is an integer number (5181309).

Almost surely, 2^75143406 is an apocalyptic number.

75143406 is an abundant number, since it is smaller than the sum of its proper divisors (90658482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75143406 is a wasteful number, since it uses less digits than its factorization.

75143406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23556.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 75143406 is about 8668.5296331039. The cubic root of 75143406 is about 421.9849466415.

The spelling of 75143406 in words is "seventy-five million, one hundred forty-three thousand, four hundred six".