401121432 has 24 divisors (see below), whose sum is σ = 1086370740. Its totient is φ = 133707120.

The previous prime is 401121419. The next prime is 401121451. The reversal of 401121432 is 234121104.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2785494 + ... + 2785637.

Almost surely, 2^401121432 is an apocalyptic number.

It is an amenable number.

401121432 is an abundant number, since it is smaller than the sum of its proper divisors (685249308).

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

401121432 is a wasteful number, since it uses less digits than its factorization.

401121432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5571143 (or 5571136 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 401121432 is about 20028.0161773452. The cubic root of 401121432 is about 737.4942223812.

Adding to 401121432 its reverse (234121104), we get a palindrome (635242536).

The spelling of 401121432 in words is "four hundred one million, one hundred twenty-one thousand, four hundred thirty-two".