400042360 has 32 divisors (see below), whose sum is σ = 903979440. Its totient is φ = 159326464.

The previous prime is 400042339. The next prime is 400042369. The reversal of 400042360 is 63240004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400042369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12142 + ... + 30781.

Almost surely, 2^400042360 is an apocalyptic number.

400042360 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400042360 is an abundant number, since it is smaller than the sum of its proper divisors (503937080).

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

400042360 is a wasteful number, since it uses less digits than its factorization.

400042360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43167 (or 43163 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 400042360 is about 20001.0589719645. The cubic root of 400042360 is about 736.8323080724.

Adding to 400042360 its reverse (63240004), we get a palindrome (463282364).

It can be divided in two parts, 4000 and 42360, that added together give a triangular number (46360 = T₃₀₄).

The spelling of 400042360 in words is "four hundred million, forty-two thousand, three hundred sixty".