7542089 has 4 divisors (see below), whose sum is σ = 7583940. Its totient is φ = 7500240.

The previous prime is 7542077. The next prime is 7542097. The reversal of 7542089 is 9802457.

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 2 ways, for example, as 466489 + 7075600 = 683^2 + 2660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7542089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7542019) 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 3 ways as a sum of consecutive naturals, for example, 20654 + ... + 21015.

It is an arithmetic number, because the mean of its divisors is an integer number (1895985).

Almost surely, 2^7542089 is an apocalyptic number.

It is an amenable number.

7542089 is a deficient number, since it is larger than the sum of its proper divisors (41851).

7542089 is a wasteful number, since it uses less digits than its factorization.

7542089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41850.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 7542089 is about 2746.2864016704. The cubic root of 7542089 is about 196.1088611557.

The spelling of 7542089 in words is "seven million, five hundred forty-two thousand, eighty-nine".