401420140 has 48 divisors (see below), whose sum is σ = 922731264. Its totient is φ = 145476800.

The previous prime is 401420113. The next prime is 401420153. The reversal of 401420140 is 41024104.

It is a super-2 number, since 2×401420140² = 322276257595239200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65487 + ... + 71353.

It is an arithmetic number, because the mean of its divisors is an integer number (19223568).

Almost surely, 2^401420140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401420140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (461365632).

401420140 is an abundant number, since it is smaller than the sum of its proper divisors (521311124).

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

401420140 is a wasteful number, since it uses less digits than its factorization.

401420140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6198 (or 6196 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 401420140 is about 20035.4720433535. The cubic root of 401420140 is about 737.6772432372.

Adding to 401420140 its reverse (41024104), we get a palindrome (442444244).

The spelling of 401420140 in words is "four hundred one million, four hundred twenty thousand, one hundred forty".