802545642 has 12 divisors (see below), whose sum is σ = 1738848930. Its totient is φ = 267515208.

The previous prime is 802545637. The next prime is 802545649. The reversal of 802545642 is 246545208.

It is a happy number.

802545642 is a `hidden beast` number, since 8 + 0 + 2 + 5 + 4 + 5 + 642 = 666.

It can be written as a sum of positive squares in only one way, i.e., 546577641 + 255968001 = 23379^2 + 15999^2 .

It is a junction number, because it is equal to n+sod(n) for n = 802545597 and 802545606.

It is not an unprimeable number, because it can be changed into a prime (802545649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22292917 + ... + 22292952.

Almost surely, 2^802545642 is an apocalyptic number.

802545642 is an abundant number, since it is smaller than the sum of its proper divisors (936303288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

802545642 is a wasteful number, since it uses less digits than its factorization.

802545642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44585877 (or 44585874 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The square root of 802545642 is about 28329.2365234222. The cubic root of 802545642 is about 929.3013761170.

The spelling of 802545642 in words is "eight hundred two million, five hundred forty-five thousand, six hundred forty-two".