401143242 has 16 divisors (see below), whose sum is σ = 815885280. Its totient is φ = 131447952.

The previous prime is 401143229. The next prime is 401143243. The reversal of 401143242 is 242341104.

It is not an unprimeable number, because it can be changed into a prime (401143243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 566233 + ... + 566940.

It is an arithmetic number, because the mean of its divisors is an integer number (50992830).

Almost surely, 2^401143242 is an apocalyptic number.

401143242 is an abundant number, since it is smaller than the sum of its proper divisors (414742038).

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

401143242 is a wasteful number, since it uses less digits than its factorization.

401143242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133237.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 401143242 is about 20028.5606572215. The cubic root of 401143242 is about 737.5075886225.

Adding to 401143242 its reverse (242341104), we get a palindrome (643484346).

The spelling of 401143242 in words is "four hundred one million, one hundred forty-three thousand, two hundred forty-two".