75556142 has 4 divisors (see below), whose sum is σ = 113334216. Its totient is φ = 37778070.

The previous prime is 75556139. The next prime is 75556157. The reversal of 75556142 is 24165557.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24165557 = 13 ⋅1858889.

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 as a sum of consecutive naturals, namely, 18889034 + ... + 18889037.

It is an arithmetic number, because the mean of its divisors is an integer number (28333554).

Almost surely, 2^75556142 is an apocalyptic number.

75556142 is a deficient number, since it is larger than the sum of its proper divisors (37778074).

75556142 is a wasteful number, since it uses less digits than its factorization.

75556142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37778073.

The product of its digits is 42000, while the sum is 35.

The square root of 75556142 is about 8692.3036072148. The cubic root of 75556142 is about 422.7561407979.

The spelling of 75556142 in words is "seventy-five million, five hundred fifty-six thousand, one hundred forty-two".