642474060346 has 16 divisors (see below), whose sum is σ = 982937929608. Its totient is φ = 314840968000.

The previous prime is 642474060287. The next prime is 642474060383. The reversal of 642474060346 is 643060474246.

It can be written as a sum of positive squares in 4 ways, for example, as 566579871225 + 75894189121 = 752715^2 + 275489^2 .

It is a junction number, because it is equal to n+sod(n) for n = 642474060296 and 642474060305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3120805 + ... + 3320296.

Almost surely, 2^642474060346 is an apocalyptic number.

642474060346 is a deficient number, since it is larger than the sum of its proper divisors (340463869262).

642474060346 is a wasteful number, since it uses less digits than its factorization.

642474060346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6442097.

The product of its (nonzero) digits is 2322432, while the sum is 46.

The spelling of 642474060346 in words is "six hundred forty-two billion, four hundred seventy-four million, sixty thousand, three hundred forty-six".