4642549 has 2 divisors, whose sum is σ = 4642550. Its totient is φ = 4642548.

The previous prime is 4642541. The next prime is 4642601. The reversal of 4642549 is 9452464.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3062500 + 1580049 = 1750^2 + 1257^2 .

It is a cyclic number.

It is not a de Polignac number, because 4642549 - 2³ = 4642541 is a prime.

It is a super-2 number, since 2×4642549² = 43106522434802, which contains 22 as substring.

4642549 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4642541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2321274 + 2321275.

It is an arithmetic number, because the mean of its divisors is an integer number (2321275).

Almost surely, 2^4642549 is an apocalyptic number.

It is an amenable number.

4642549 is a deficient number, since it is larger than the sum of its proper divisors (1).

4642549 is an equidigital number, since it uses as much as digits as its factorization.

4642549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 34.

The square root of 4642549 is about 2154.6575133881. The cubic root of 4642549 is about 166.8215551239.

The spelling of 4642549 in words is "four million, six hundred forty-two thousand, five hundred forty-nine".