401520002 has 24 divisors (see below), whose sum is σ = 661147524. Its totient is φ = 182767104.

The previous prime is 401520001. The next prime is 401520037. The reversal of 401520002 is 200025104.

It can be written as a sum of positive squares in 6 ways, for example, as 177449041 + 224070961 = 13321^2 + 14969^2 .

It is a super-2 number, since 2×401520002² = 322436624012160008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401520001) 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 11 ways as a sum of consecutive naturals, for example, 16538 + ... + 32810.

Almost surely, 2^401520002 is an apocalyptic number.

401520002 is a deficient number, since it is larger than the sum of its proper divisors (259627522).

401520002 is a wasteful number, since it uses less digits than its factorization.

401520002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16374 (or 16361 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 401520002 is about 20037.9640183328. The cubic root of 401520002 is about 737.7384092572.

Adding to 401520002 its reverse (200025104), we get a palindrome (601545106).

The spelling of 401520002 in words is "four hundred one million, five hundred twenty thousand, two".