75012642 has 28 divisors (see below), whose sum is σ = 168704550. Its totient is φ = 25003728.

The previous prime is 75012631. The next prime is 75012643. The reversal of 75012642 is 24621057.

75012642 is a `hidden beast` number, since 7 + 5 + 0 + 12 + 642 = 666.

It can be written as a sum of positive squares in only one way, i.e., 68707521 + 6305121 = 8289^2 + 2511^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (75012643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 24267 + ... + 27182.

Almost surely, 2^75012642 is an apocalyptic number.

75012642 is an abundant number, since it is smaller than the sum of its proper divisors (93691908).

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

75012642 is an equidigital number, since it uses as much as digits as its factorization.

75012642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51469 (or 51454 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 75012642 is about 8660.9838932999. The cubic root of 75012642 is about 421.7400261547.

Adding to 75012642 its reverse (24621057), we get a palindrome (99633699).

The spelling of 75012642 in words is "seventy-five million, twelve thousand, six hundred forty-two".