1002001234 has 8 divisors (see below), whose sum is σ = 1618617420. Its totient is φ = 462462096.

The previous prime is 1002001219. The next prime is 1002001237. The reversal of 1002001234 is 4321002001.

It can be written as a sum of positive squares in 2 ways, for example, as 769896009 + 232105225 = 27747^2 + 15235^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (1002001237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19269229 + ... + 19269280.

Almost surely, 2^1002001234 is an apocalyptic number.

1002001234 is a deficient number, since it is larger than the sum of its proper divisors (616616186).

1002001234 is a wasteful number, since it uses less digits than its factorization.

1002001234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38538524.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1002001234 is about 31654.4030744540. The cubic root of 1002001234 is about 1000.6666335010. Note that the first 4 decimals are identical.

Adding to 1002001234 its reverse (4321002001), we get a palindrome (5323003235).

The spelling of 1002001234 in words is "one billion, two million, one thousand, two hundred thirty-four".