75242434 has 4 divisors (see below), whose sum is σ = 112863654. Its totient is φ = 37621216.

The previous prime is 75242429. The next prime is 75242449. The reversal of 75242434 is 43424257.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 73908409 + 1334025 = 8597^2 + 1155^2 .

It is a super-2 number, since 2×75242434² = 11322847748488712, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 75242396 and 75242405.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 18810607 + ... + 18810610.

Almost surely, 2^75242434 is an apocalyptic number.

75242434 is a deficient number, since it is larger than the sum of its proper divisors (37621220).

75242434 is a wasteful number, since it uses less digits than its factorization.

75242434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37621219.

The product of its digits is 26880, while the sum is 31.

The square root of 75242434 is about 8674.2396784963. The cubic root of 75242434 is about 422.1702367155.

The spelling of 75242434 in words is "seventy-five million, two hundred forty-two thousand, four hundred thirty-four".