2001215402 has 8 divisors (see below), whose sum is σ = 3002362500. Its totient is φ = 1000427904.

The previous prime is 2001215351. The next prime is 2001215417. The reversal of 2001215402 is 2045121002.

It can be written as a sum of positive squares in 2 ways, for example, as 1851666961 + 149548441 = 43031^2 + 12229^2 .

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

It is an unprimeable number.

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, 75527 + ... + 98522.

Almost surely, 2^2001215402 is an apocalyptic number.

2001215402 is a deficient number, since it is larger than the sum of its proper divisors (1001147098).

2001215402 is a wasteful number, since it uses less digits than its factorization.

2001215402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179800.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 2001215402 is about 44734.9460936302. The cubic root of 2001215402 is about 1260.1762166408.

Adding to 2001215402 its reverse (2045121002), we get a palindrome (4046336404).

The spelling of 2001215402 in words is "two billion, one million, two hundred fifteen thousand, four hundred two".