20124741 has 24 divisors (see below), whose sum is σ = 33618144. Its totient is φ = 10614240.

The previous prime is 20124733. The next prime is 20124757. The reversal of 20124741 is 14742102.

It is a happy number.

It is not a de Polignac number, because 20124741 - 2³ = 20124733 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20128741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3355 + ... + 7176.

It is an arithmetic number, because the mean of its divisors is an integer number (1400756).

Almost surely, 2^20124741 is an apocalyptic number.

20124741 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20124741 is a deficient number, since it is larger than the sum of its proper divisors (13493403).

20124741 is a wasteful number, since it uses less digits than its factorization.

20124741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10561 (or 10554 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 20124741 is about 4486.0607441273. The cubic root of 20124741 is about 272.0049243990.

Adding to 20124741 its reverse (14742102), we get a palindrome (34866843).

It can be divided in two parts, 201 and 24741, that added together give a palindrome (24942).

The spelling of 20124741 in words is "twenty million, one hundred twenty-four thousand, seven hundred forty-one".