401201040 has 40 divisors (see below), whose sum is σ = 1243723968. Its totient is φ = 106986880.

The previous prime is 401201011. The next prime is 401201057. The reversal of 401201040 is 40102104.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 835596 + ... + 836075.

Almost surely, 2^401201040 is an apocalyptic number.

401201040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401201040 is an abundant number, since it is smaller than the sum of its proper divisors (842522928).

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

401201040 is a wasteful number, since it uses less digits than its factorization.

401201040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671687 (or 1671681 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 401201040 is about 20030.0034947576. The cubic root of 401201040 is about 737.5430077380.

Adding to 401201040 its reverse (40102104), we get a palindrome (441303144).

The spelling of 401201040 in words is "four hundred one million, two hundred one thousand, forty".