401442000 has 160 divisors (see below), whose sum is σ = 1350984960. Its totient is φ = 102361600.

The previous prime is 401441987. The next prime is 401442001. The reversal of 401442000 is 244104.

It is a super-2 number, since 2×401442000² = 322311358728000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401442001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136546 + ... + 139454.

It is an arithmetic number, because the mean of its divisors is an integer number (8443656).

Almost surely, 2^401442000 is an apocalyptic number.

401442000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401442000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (675492480).

401442000 is an abundant number, since it is smaller than the sum of its proper divisors (949542960).

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

401442000 is a wasteful number, since it uses less digits than its factorization.

401442000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2958 (or 2942 counting only the distinct ones).

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

The square root of 401442000 is about 20036.0175683692. The cubic root of 401442000 is about 737.6906334737.

Adding to 401442000 its reverse (244104), we get a palindrome (401686104).

The spelling of 401442000 in words is "four hundred one million, four hundred forty-two thousand".