401521041 has 12 divisors (see below), whose sum is σ = 584543232. Its totient is φ = 265572216.

The previous prime is 401521039. The next prime is 401521061. The reversal of 401521041 is 140125104.

It is not a de Polignac number, because 401521041 - 2¹ = 401521039 is a prime.

It is a super-2 number, since 2×401521041² = 322438292731447362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401521061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174501 + ... + 176786.

It is an arithmetic number, because the mean of its divisors is an integer number (48711936).

Almost surely, 2^401521041 is an apocalyptic number.

It is an amenable number.

401521041 is a deficient number, since it is larger than the sum of its proper divisors (183022191).

401521041 is a wasteful number, since it uses less digits than its factorization.

401521041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351420 (or 351417 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 401521041 is about 20037.9899441037. The cubic root of 401521041 is about 737.7390455971.

Adding to 401521041 its reverse (140125104), we get a palindrome (541646145).

The spelling of 401521041 in words is "four hundred one million, five hundred twenty-one thousand, forty-one".