1002047042 has 16 divisors (see below), whose sum is σ = 1605798240. Its totient is φ = 467568288.

The previous prime is 1002047041. The next prime is 1002047047. The reversal of 1002047042 is 2407402001.

It is not an unprimeable number, because it can be changed into a prime (1002047041) 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, 194243 + ... + 199334.

It is an arithmetic number, because the mean of its divisors is an integer number (100362390).

Almost surely, 2^1002047042 is an apocalyptic number.

1002047042 is a deficient number, since it is larger than the sum of its proper divisors (603751198).

1002047042 is a wasteful number, since it uses less digits than its factorization.

1002047042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393665.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 1002047042 is about 31655.1266306107. The cubic root of 1002047042 is about 1000.6818822642.

Adding to 1002047042 its reverse (2407402001), we get a palindrome (3409449043).

The spelling of 1002047042 in words is "one billion, two million, forty-seven thousand, forty-two".