502666642 has 16 divisors (see below), whose sum is σ = 817827192. Its totient is φ = 230778880.

The previous prime is 502666631. The next prime is 502666649. The reversal of 502666642 is 246666205.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 288014841 + 214651801 = 16971^2 + 14651^2 .

It is not an unprimeable number, because it can be changed into a prime (502666649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178903 + ... + 181690.

Almost surely, 2^502666642 is an apocalyptic number.

502666642 is a deficient number, since it is larger than the sum of its proper divisors (315160550).

502666642 is a wasteful number, since it uses less digits than its factorization.

502666642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360653.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 502666642 is about 22420.2284109685. The cubic root of 502666642 is about 795.1090350563.

The spelling of 502666642 in words is "five hundred two million, six hundred sixty-six thousand, six hundred forty-two".