400103240 has 32 divisors (see below), whose sum is σ = 900824760. Its totient is φ = 159936000.

The previous prime is 400103219. The next prime is 400103251. The reversal of 400103240 is 42301004.

It can be written as a sum of positive squares in 4 ways, for example, as 77757124 + 322346116 = 8818^2 + 17954^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93140 + ... + 97340.

Almost surely, 2^400103240 is an apocalyptic number.

400103240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400103240 is an abundant number, since it is smaller than the sum of its proper divisors (500721520).

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

400103240 is a wasteful number, since it uses less digits than its factorization.

400103240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6593 (or 6589 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 400103240 is about 20002.5808334825. The cubic root of 400103240 is about 736.8696841772.

Adding to 400103240 its reverse (42301004), we get a palindrome (442404244).

The spelling of 400103240 in words is "four hundred million, one hundred three thousand, two hundred forty".