75542420 has 24 divisors (see below), whose sum is σ = 161330400. Its totient is φ = 29704352.

The previous prime is 75542417. The next prime is 75542447. The reversal of 75542420 is 2424557.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30830 + ... + 33189.

It is an arithmetic number, because the mean of its divisors is an integer number (6722100).

Almost surely, 2^75542420 is an apocalyptic number.

It is an amenable number.

75542420 is an abundant number, since it is smaller than the sum of its proper divisors (85787980).

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

75542420 is a wasteful number, since it uses less digits than its factorization.

75542420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64087 (or 64085 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 75542420 is about 8691.5142524188. The cubic root of 75542420 is about 422.7305465363.

Adding to 75542420 its reverse (2424557), we get a palindrome (77966977).

The spelling of 75542420 in words is "seventy-five million, five hundred forty-two thousand, four hundred twenty".