401501205 has 40 divisors (see below), whose sum is σ = 822552192. Its totient is φ = 183542112.

The previous prime is 401501203. The next prime is 401501227. The reversal of 401501205 is 502105104.

It is not a de Polignac number, because 401501205 - 2¹ = 401501203 is a prime.

It is a super-2 number, since 2×401501205² = 322406435232904050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401501203) 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 39 ways as a sum of consecutive naturals, for example, 67977 + ... + 73646.

Almost surely, 2^401501205 is an apocalyptic number.

401501205 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

401501205 is an abundant number, since it is smaller than the sum of its proper divisors (421050987).

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

401501205 is a wasteful number, since it uses less digits than its factorization.

401501205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141647 (or 141638 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 401501205 is about 20037.4949781653. The cubic root of 401501205 is about 737.7268967670.

Adding to 401501205 its reverse (502105104), we get a palindrome (903606309).

The spelling of 401501205 in words is "four hundred one million, five hundred one thousand, two hundred five".