7545442 has 4 divisors (see below), whose sum is σ = 11318166. Its totient is φ = 3772720.

The previous prime is 7545367. The next prime is 7545443. The reversal of 7545442 is 2445457.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7230721 + 314721 = 2689^2 + 561^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (7545443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1886359 + ... + 1886362.

Almost surely, 2^7545442 is an apocalyptic number.

7545442 is a deficient number, since it is larger than the sum of its proper divisors (3772724).

7545442 is a wasteful number, since it uses less digits than its factorization.

7545442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3772723.

The product of its digits is 22400, while the sum is 31.

The square root of 7545442 is about 2746.8967945666. The cubic root of 7545442 is about 196.1379183392.

The spelling of 7545442 in words is "seven million, five hundred forty-five thousand, four hundred forty-two".