400342030 has 16 divisors (see below), whose sum is σ = 786126384. Its totient is φ = 145578880.

The previous prime is 400342003. The next prime is 400342039. The reversal of 400342030 is 30243004.

It is a junction number, because it is equal to n+sod(n) for n = 400341995 and 400342013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400342039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1819627 + ... + 1819846.

It is an arithmetic number, because the mean of its divisors is an integer number (49132899).

Almost surely, 2^400342030 is an apocalyptic number.

400342030 is a deficient number, since it is larger than the sum of its proper divisors (385784354).

400342030 is a wasteful number, since it uses less digits than its factorization.

400342030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3639491.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 400342030 is about 20008.5489228979. The cubic root of 400342030 is about 737.0162481145.

Adding to 400342030 its reverse (30243004), we get a palindrome (430585034).

The spelling of 400342030 in words is "four hundred million, three hundred forty-two thousand, thirty".