20242541 has 4 divisors (see below), whose sum is σ = 22082784. Its totient is φ = 18402300.

The previous prime is 20242511. The next prime is 20242549. The reversal of 20242541 is 14524202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20242541 - 2¹⁸ = 19980397 is a prime.

It is a super-2 number, since 2×20242541² = 819520932273362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20242549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 920105 + ... + 920126.

It is an arithmetic number, because the mean of its divisors is an integer number (5520696).

Almost surely, 2^20242541 is an apocalyptic number.

It is an amenable number.

20242541 is a deficient number, since it is larger than the sum of its proper divisors (1840243).

20242541 is a wasteful number, since it uses less digits than its factorization.

20242541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840242.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 20242541 is about 4499.1711458890. The cubic root of 20242541 is about 272.5346183890.

Adding to 20242541 its reverse (14524202), we get a palindrome (34766743).

The spelling of 20242541 in words is "twenty million, two hundred forty-two thousand, five hundred forty-one".