401048042 has 4 divisors (see below), whose sum is σ = 601572066. Its totient is φ = 200524020.

The previous prime is 401048041. The next prime is 401048059. The reversal of 401048042 is 240840104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 388523521 + 12524521 = 19711^2 + 3539^2 .

It is a junction number, because it is equal to n+sod(n) for n = 401047999 and 401048017.

It is not an unprimeable number, because it can be changed into a prime (401048041) 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 as a sum of consecutive naturals, namely, 100262009 + ... + 100262012.

Almost surely, 2^401048042 is an apocalyptic number.

401048042 is a deficient number, since it is larger than the sum of its proper divisors (200524024).

401048042 is a wasteful number, since it uses less digits than its factorization.

401048042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200524023.

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 401048042 is about 20026.1839100713. The cubic root of 401048042 is about 737.4492418193.

Adding to 401048042 its reverse (240840104), we get a palindrome (641888146).

The spelling of 401048042 in words is "four hundred one million, forty-eight thousand, forty-two".