400202043 has 8 divisors (see below), whose sum is σ = 538325328. Its totient is φ = 264440064.

The previous prime is 400202021. The next prime is 400202051. The reversal of 400202043 is 340202004.

It is a happy number.

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

It is not a de Polignac number, because 400202043 - 2⁶ = 400201979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400202063) 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, 589930 + ... + 590607.

It is an arithmetic number, because the mean of its divisors is an integer number (67290666).

Almost surely, 2^400202043 is an apocalyptic number.

400202043 is a deficient number, since it is larger than the sum of its proper divisors (138123285).

400202043 is a wasteful number, since it uses less digits than its factorization.

400202043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180653.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 400202043 is about 20005.0504373271. The cubic root of 400202043 is about 736.9303343095.

Adding to 400202043 its reverse (340202004), we get a palindrome (740404047).

The spelling of 400202043 in words is "four hundred million, two hundred two thousand, forty-three".