401240442 has 32 divisors (see below), whose sum is σ = 845637120. Its totient is φ = 126569520.

The previous prime is 401240431. The next prime is 401240501. The reversal of 401240442 is 244042104.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172467 + ... + 174777.

It is an arithmetic number, because the mean of its divisors is an integer number (26426160).

Almost surely, 2^401240442 is an apocalyptic number.

401240442 is an abundant number, since it is smaller than the sum of its proper divisors (444396678).

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

401240442 is a wasteful number, since it uses less digits than its factorization.

401240442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3858.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 401240442 is about 20030.9870450759. The cubic root of 401240442 is about 737.5671516754.

Adding to 401240442 its reverse (244042104), we get a palindrome (645282546).

The spelling of 401240442 in words is "four hundred one million, two hundred forty thousand, four hundred forty-two".