400202126 has 8 divisors (see below), whose sum is σ = 619667904. Its totient is φ = 193646160.

The previous prime is 400202081. The next prime is 400202129. The reversal of 400202126 is 621202004.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400202129) 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 3 ways as a sum of consecutive naturals, for example, 3227375 + ... + 3227498.

It is an arithmetic number, because the mean of its divisors is an integer number (77458488).

Almost surely, 2^400202126 is an apocalyptic number.

400202126 is a deficient number, since it is larger than the sum of its proper divisors (219465778).

400202126 is a wasteful number, since it uses less digits than its factorization.

400202126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6454906.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 400202126 is about 20005.0525118031. The cubic root of 400202126 is about 736.9303852548.

The spelling of 400202126 in words is "four hundred million, two hundred two thousand, one hundred twenty-six".