401441240 has 16 divisors (see below), whose sum is σ = 903242880. Its totient is φ = 160576480.

The previous prime is 401441237. The next prime is 401441263. The reversal of 401441240 is 42144104.

It is a happy number.

It is a super-2 number, since 2×401441240² = 322310138345475200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5017976 + ... + 5018055.

It is an arithmetic number, because the mean of its divisors is an integer number (56452680).

Almost surely, 2^401441240 is an apocalyptic number.

401441240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401441240 is an abundant number, since it is smaller than the sum of its proper divisors (501801640).

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

401441240 is a wasteful number, since it uses less digits than its factorization.

401441240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10036042 (or 10036038 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 401441240 is about 20035.9986025154. The cubic root of 401441240 is about 737.6901679475.

Adding to 401441240 its reverse (42144104), we get a palindrome (443585344).

It can be divided in two parts, 4014 and 41240, that added together give a palindrome (45254).

The spelling of 401441240 in words is "four hundred one million, four hundred forty-one thousand, two hundred forty".