4945642 has 32 divisors (see below), whose sum is σ = 8446032. Its totient is φ = 2156544.

The previous prime is 4945639. The next prime is 4945651. The reversal of 4945642 is 2465494.

It can be written as a sum of positive squares in 8 ways, for example, as 3066001 + 1879641 = 1751^2 + 1371^2 .

It is a d-powerful number, because it can be written as 4 + 9⁷ + 4⁵ + 5⁷ + 6⁶ + 4⁶ + 2¹⁵ .

It is a junction number, because it is equal to n+sod(n) for n = 4945598 and 4945607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50938 + ... + 51034.

Almost surely, 2^4945642 is an apocalyptic number.

4945642 is a deficient number, since it is larger than the sum of its proper divisors (3500390).

4945642 is a wasteful number, since it uses less digits than its factorization.

4945642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202.

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

The square root of 4945642 is about 2223.8799428027. The cubic root of 4945642 is about 170.3756629117.

The spelling of 4945642 in words is "four million, nine hundred forty-five thousand, six hundred forty-two".