400126350 has 96 divisors (see below), whose sum is σ = 1073368800. Its totient is φ = 98058240.

The previous prime is 400126319. The next prime is 400126357. The reversal of 400126350 is 53621004.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400126357) 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 47 ways as a sum of consecutive naturals, for example, 875322 + ... + 875778.

It is an arithmetic number, because the mean of its divisors is an integer number (11180925).

Almost surely, 2^400126350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400126350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (536684400).

400126350 is an abundant number, since it is smaller than the sum of its proper divisors (673242450).

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

400126350 is a wasteful number, since it uses less digits than its factorization.

400126350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934 (or 929 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 400126350 is about 20003.1585005968. The cubic root of 400126350 is about 736.8838711243.

Adding to 400126350 its reverse (53621004), we get a palindrome (453747354).

The spelling of 400126350 in words is "four hundred million, one hundred twenty-six thousand, three hundred fifty".