75239742 has 16 divisors (see below), whose sum is σ = 150579072. Its totient is φ = 25063320.

The previous prime is 75239707. The next prime is 75239743. The reversal of 75239742 is 24793257.

It is a super-2 number, since 2×75239742² = 11322037552453128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 75239742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75239743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8767 + ... + 15077.

It is an arithmetic number, because the mean of its divisors is an integer number (9411192).

Almost surely, 2^75239742 is an apocalyptic number.

75239742 is an abundant number, since it is smaller than the sum of its proper divisors (75339330).

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

75239742 is a wasteful number, since it uses less digits than its factorization.

75239742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8303.

The product of its digits is 105840, while the sum is 39.

The square root of 75239742 is about 8674.0845050069. The cubic root of 75239742 is about 422.1652018977.

The spelling of 75239742 in words is "seventy-five million, two hundred thirty-nine thousand, seven hundred forty-two".