401004043412 has 18 divisors (see below), whose sum is σ = 816329660202. Its totient is φ = 171858875664.

The previous prime is 401004043409. The next prime is 401004043423. The reversal of 401004043412 is 214340400104.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 316255517956 + 84748525456 = 562366^2 + 291116^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1022969303 + ... + 1022969694.

It is an arithmetic number, because the mean of its divisors is an integer number (45351647789).

Almost surely, 2^401004043412 is an apocalyptic number.

It is an amenable number.

401004043412 is an abundant number, since it is smaller than the sum of its proper divisors (415325616790).

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

401004043412 is a wasteful number, since it uses less digits than its factorization.

401004043412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045939015 (or 2045939006 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 401004043412 its reverse (214340400104), we get a palindrome (615344443516).

The spelling of 401004043412 in words is "four hundred one billion, four million, forty-three thousand, four hundred twelve".