75891142 has 4 divisors (see below), whose sum is σ = 113836716. Its totient is φ = 37945570.

The previous prime is 75891103. The next prime is 75891143. The reversal of 75891142 is 24119857.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24119857 = 73 ⋅330409.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75891143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18972784 + ... + 18972787.

It is an arithmetic number, because the mean of its divisors is an integer number (28459179).

Almost surely, 2^75891142 is an apocalyptic number.

75891142 is a deficient number, since it is larger than the sum of its proper divisors (37945574).

75891142 is a wasteful number, since it uses less digits than its factorization.

75891142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37945573.

The product of its digits is 20160, while the sum is 37.

The square root of 75891142 is about 8711.5522153058. The cubic root of 75891142 is about 423.3800235081.

The spelling of 75891142 in words is "seventy-five million, eight hundred ninety-one thousand, one hundred forty-two".