401022042 has 16 divisors (see below), whose sum is σ = 820696800. Its totient is φ = 130565232.

The previous prime is 401022031. The next prime is 401022049. The reversal of 401022042 is 240220104.

It is not an unprimeable number, because it can be changed into a prime (401022049) 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 7 ways as a sum of consecutive naturals, for example, 776917 + ... + 777432.

It is an arithmetic number, because the mean of its divisors is an integer number (51293550).

Almost surely, 2^401022042 is an apocalyptic number.

401022042 is an abundant number, since it is smaller than the sum of its proper divisors (419674758).

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

401022042 is a wasteful number, since it uses less digits than its factorization.

401022042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554397.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 401022042 is about 20025.5347494143. The cubic root of 401022042 is about 737.4333051628.

Adding to 401022042 its reverse (240220104), we get a palindrome (641242146).

The spelling of 401022042 in words is "four hundred one million, twenty-two thousand, forty-two".