75742147 has 4 divisors (see below), whose sum is σ = 81568480. Its totient is φ = 69915816.

The previous prime is 75742103. The next prime is 75742169. The reversal of 75742147 is 74124757.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 75742147 - 2¹⁹ = 75217859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75743147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2913147 + ... + 2913172.

It is an arithmetic number, because the mean of its divisors is an integer number (20392120).

Almost surely, 2^75742147 is an apocalyptic number.

75742147 is a deficient number, since it is larger than the sum of its proper divisors (5826333).

75742147 is a wasteful number, since it uses less digits than its factorization.

75742147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5826332.

The product of its digits is 54880, while the sum is 37.

The square root of 75742147 is about 8702.9964380092. The cubic root of 75742147 is about 423.1027718549.

The spelling of 75742147 in words is "seventy-five million, seven hundred forty-two thousand, one hundred forty-seven".