400242203 has 8 divisors (see below), whose sum is σ = 429151680. Its totient is φ = 371928960.

The previous prime is 400242197. The next prime is 400242217. The reversal of 400242203 is 302242004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400242203 - 2⁴ = 400242187 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400242263) 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, 147668 + ... + 150353.

It is an arithmetic number, because the mean of its divisors is an integer number (53643960).

Almost surely, 2^400242203 is an apocalyptic number.

400242203 is a deficient number, since it is larger than the sum of its proper divisors (28909477).

400242203 is a wasteful number, since it uses less digits than its factorization.

400242203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298117.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 400242203 is about 20006.0541586791. The cubic root of 400242203 is about 736.9549836359.

Adding to 400242203 its reverse (302242004), we get a palindrome (702484207).

The spelling of 400242203 in words is "four hundred million, two hundred forty-two thousand, two hundred three".