75442923 has 24 divisors (see below), whose sum is σ = 116015328. Its totient is φ = 47077632.

The previous prime is 75442919. The next prime is 75442973. The reversal of 75442923 is 32924457.

It is not a de Polignac number, because 75442923 - 2² = 75442919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75442973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28890 + ... + 31392.

It is an arithmetic number, because the mean of its divisors is an integer number (4833972).

Almost surely, 2^75442923 is an apocalyptic number.

75442923 is a deficient number, since it is larger than the sum of its proper divisors (40572405).

75442923 is a wasteful number, since it uses less digits than its factorization.

75442923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2723 (or 2720 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 75442923 is about 8685.7885652369. The cubic root of 75442923 is about 422.5448720475.

The spelling of 75442923 in words is "seventy-five million, four hundred forty-two thousand, nine hundred twenty-three".