75072642 has 8 divisors (see below), whose sum is σ = 150145296. Its totient is φ = 25024212.

The previous prime is 75072637. The next prime is 75072643. The reversal of 75072642 is 24627057.

It is a sphenic number, since it is the product of 3 distinct primes.

75072642 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (75072643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6256048 + ... + 6256059.

It is an arithmetic number, because the mean of its divisors is an integer number (18768162).

Almost surely, 2^75072642 is an apocalyptic number.

75072642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

75072642 is a wasteful number, since it uses less digits than its factorization.

75072642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12512112.

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 75072642 is about 8664.4470106291. The cubic root of 75072642 is about 421.8524412409.

Adding to 75072642 its reverse (24627057), we get a palindrome (99699699).

The spelling of 75072642 in words is "seventy-five million, seventy-two thousand, six hundred forty-two".