201015402 has 64 divisors (see below), whose sum is σ = 488294400. Its totient is φ = 53887680.

The previous prime is 201015359. The next prime is 201015403. The reversal of 201015402 is 204510102.

It is not an unprimeable number, because it can be changed into a prime (201015403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85827 + ... + 88137.

It is an arithmetic number, because the mean of its divisors is an integer number (7629600).

Almost surely, 2^201015402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201015402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244147200).

201015402 is an abundant number, since it is smaller than the sum of its proper divisors (287278998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201015402 is a wasteful number, since it uses less digits than its factorization.

201015402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2451.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 201015402 is about 14177.9900550113. The cubic root of 201015402 is about 585.7915619579.

Adding to 201015402 its reverse (204510102), we get a palindrome (405525504).

The spelling of 201015402 in words is "two hundred one million, fifteen thousand, four hundred two".