41981000 has 32 divisors (see below), whose sum is σ = 98237880. Its totient is φ = 16792000.

The previous prime is 41980979. The next prime is 41981021. The reversal of 41981000 is 18914.

It is an interprime number because it is at equal distance from previous prime (41980979) and next prime (41981021).

It can be written as a sum of positive squares in 4 ways, for example, as 2617924 + 39363076 = 1618^2 + 6274^2 .

It is a super-2 number, since 2×41981000² = 3524808722000000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19991 + ... + 21990.

Almost surely, 2^41981000 is an apocalyptic number.

41981000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

41981000 is an abundant number, since it is smaller than the sum of its proper divisors (56256880).

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

41981000 is a wasteful number, since it uses less digits than its factorization.

41981000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42002 (or 41988 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 41981000 is about 6479.2746507615. The cubic root of 41981000 is about 347.5502403078.

Adding to 41981000 its reverse (18914), we get a palindrome (41999914).

The spelling of 41981000 in words is "forty-one million, nine hundred eighty-one thousand".