41427981 has 18 divisors (see below), whose sum is σ = 69611022. Its totient is φ = 23672880.

The previous prime is 41427973. The next prime is 41428001. The reversal of 41427981 is 18972414.

It can be written as a sum of positive squares in only one way, i.e., 30969225 + 10458756 = 5565^2 + 3234^2 .

It is not a de Polignac number, because 41427981 - 2³ = 41427973 is a prime.

It is a super-2 number, since 2×41427981² = 3432555219472722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41427931) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 46530 + ... + 47411.

It is an arithmetic number, because the mean of its divisors is an integer number (3867279).

Almost surely, 2^41427981 is an apocalyptic number.

It is an amenable number.

41427981 is a deficient number, since it is larger than the sum of its proper divisors (28183041).

41427981 is a wasteful number, since it uses less digits than its factorization.

41427981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93961 (or 93951 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 41427981 is about 6436.4571776716. The cubic root of 41427981 is about 346.0173875009.

The spelling of 41427981 in words is "forty-one million, four hundred twenty-seven thousand, nine hundred eighty-one".