4540642 has 4 divisors (see below), whose sum is σ = 6810966. Its totient is φ = 2270320.

The previous prime is 4540633. The next prime is 4540651. The reversal of 4540642 is 2460454.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2460454 = 2 ⋅1230227.

It is an interprime number because it is at equal distance from previous prime (4540633) and next prime (4540651).

It can be written as a sum of positive squares in only one way, i.e., 4116841 + 423801 = 2029^2 + 651^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1135159 + ... + 1135162.

Almost surely, 2^4540642 is an apocalyptic number.

4540642 is a deficient number, since it is larger than the sum of its proper divisors (2270324).

4540642 is a wasteful number, since it uses less digits than its factorization.

4540642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2270323.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 4540642 is about 2130.8782227054. The cubic root of 4540642 is about 165.5918992591.

The spelling of 4540642 in words is "four million, five hundred forty thousand, six hundred forty-two".