400103040 has 64 divisors (see below), whose sum is σ = 1275334560. Its totient is φ = 106693632.

The previous prime is 400102993. The next prime is 400103047. The reversal of 400103040 is 40301004.

It is a tau number, because it is divible by the number of its divisors (64).

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

It is not an unprimeable number, because it can be changed into a prime (400103047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102274 + ... + 106113.

Almost surely, 2^400103040 is an apocalyptic number.

400103040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400103040 is an abundant number, since it is smaller than the sum of its proper divisors (875231520).

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

400103040 is a wasteful number, since it uses less digits than its factorization.

400103040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208409 (or 208397 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 400103040 is about 20002.5758341270. The cubic root of 400103040 is about 736.8695613973.

Adding to 400103040 its reverse (40301004), we get a palindrome (440404044).

The spelling of 400103040 in words is "four hundred million, one hundred three thousand, forty".