41121520 has 80 divisors (see below), whose sum is σ = 105743232. Its totient is φ = 14746880.

The previous prime is 41121511. The next prime is 41121527. The reversal of 41121520 is 2512114.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×41121520² = 3381958814220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 41121494 and 41121503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41121527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72759 + ... + 73321.

Almost surely, 2^41121520 is an apocalyptic number.

41121520 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 41121520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52871616).

41121520 is an abundant number, since it is smaller than the sum of its proper divisors (64621712).

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

41121520 is a wasteful number, since it uses less digits than its factorization.

41121520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 664 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 41121520 is about 6412.6063344010. The cubic root of 41121520 is about 345.1620606675.

Adding to 41121520 its reverse (2512114), we get a palindrome (43633634).

The spelling of 41121520 in words is "forty-one million, one hundred twenty-one thousand, five hundred twenty".