75045642 has 32 divisors (see below), whose sum is σ = 178993152. Its totient is φ = 20509104.

The previous prime is 75045631. The next prime is 75045643. The reversal of 75045642 is 24654057.

It is not an unprimeable number, because it can be changed into a prime (75045643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37878 + ... + 39809.

It is an arithmetic number, because the mean of its divisors is an integer number (5593536).

Almost surely, 2^75045642 is an apocalyptic number.

75045642 is an abundant number, since it is smaller than the sum of its proper divisors (103947510).

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

75045642 is a wasteful number, since it uses less digits than its factorization.

75045642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77722.

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 75045642 is about 8662.8887791544. Note that the first 3 decimals coincide. The cubic root of 75045642 is about 421.8018618671.

Adding to 75045642 its reverse (24654057), we get a palindrome (99699699).

The spelling of 75045642 in words is "seventy-five million, forty-five thousand, six hundred forty-two".