842040002 has 4 divisors (see below), whose sum is σ = 1263060006. Its totient is φ = 421020000.

The previous prime is 842039993. The next prime is 842040013. The reversal of 842040002 is 200040248.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 620059801 + 221980201 = 24901^2 + 14899^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210509999 + ... + 210510002.

Almost surely, 2^842040002 is an apocalyptic number.

842040002 is a deficient number, since it is larger than the sum of its proper divisors (421020004).

842040002 is a wasteful number, since it uses less digits than its factorization.

842040002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421020003.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 842040002 is about 29017.9255288865. The cubic root of 842040002 is about 944.3019964363.

The spelling of 842040002 in words is "eight hundred forty-two million, forty thousand, two".