400010140 has 12 divisors (see below), whose sum is σ = 840021336. Its totient is φ = 160004048.

The previous prime is 400010131. The next prime is 400010159. The reversal of 400010140 is 41010004.

It is a super-2 number, since 2×400010140² = 320016224205639200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 10000234 + ... + 10000273.

It is an arithmetic number, because the mean of its divisors is an integer number (70001778).

Almost surely, 2^400010140 is an apocalyptic number.

It is an amenable number.

400010140 is an abundant number, since it is smaller than the sum of its proper divisors (440011196).

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

400010140 is a wasteful number, since it uses less digits than its factorization.

400010140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20000516 (or 20000514 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 400010140 is about 20000.2534983935. The cubic root of 400010140 is about 736.8125256887.

Adding to 400010140 its reverse (41010004), we get a palindrome (441020144).

The spelling of 400010140 in words is "four hundred million, ten thousand, one hundred forty".