401940075 has 24 divisors (see below), whose sum is σ = 677086128. Its totient is φ = 210321280.

The previous prime is 401940073. The next prime is 401940083. The reversal of 401940075 is 570049104.

It is a happy number.

It is not a de Polignac number, because 401940075 - 2¹ = 401940073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (401940073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46584 + ... + 54533.

It is an arithmetic number, because the mean of its divisors is an integer number (28211922).

Almost surely, 2^401940075 is an apocalyptic number.

401940075 is a deficient number, since it is larger than the sum of its proper divisors (275146053).

401940075 is a wasteful number, since it uses less digits than its factorization.

401940075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101183 (or 101178 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 401940075 is about 20048.4432063939. The cubic root of 401940075 is about 737.9955952616.

Adding to 401940075 its reverse (570049104), we get a palindrome (971989179).

The spelling of 401940075 in words is "four hundred one million, nine hundred forty thousand, seventy-five".