1002194842 has 12 divisors (see below), whose sum is σ = 1652379498. Its totient is φ = 455543000.

The previous prime is 1002194819. The next prime is 1002194873. The reversal of 1002194842 is 2484912001.

It can be written as a sum of positive squares in only one way, i.e., 881436721 + 120758121 = 29689^2 + 10989^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2070409 + ... + 2070892.

Almost surely, 2^1002194842 is an apocalyptic number.

1002194842 is a deficient number, since it is larger than the sum of its proper divisors (650184656).

1002194842 is a wasteful number, since it uses less digits than its factorization.

1002194842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4141325 (or 4141314 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 1002194842 is about 31657.4610794991. The cubic root of 1002194842 is about 1000.7310793927.

The spelling of 1002194842 in words is "one billion, two million, one hundred ninety-four thousand, eight hundred forty-two".