20742441 has 8 divisors (see below), whose sum is σ = 28548864. Its totient is φ = 13382160.

The previous prime is 20742413. The next prime is 20742443. The reversal of 20742441 is 14424702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20742441 - 2⁶ = 20742377 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (20742443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111426 + ... + 111611.

It is an arithmetic number, because the mean of its divisors is an integer number (3568608).

Almost surely, 2^20742441 is an apocalyptic number.

It is an amenable number.

20742441 is a deficient number, since it is larger than the sum of its proper divisors (7806423).

20742441 is a wasteful number, since it uses less digits than its factorization.

20742441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223071.

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 20742441 is about 4554.3870059537. The cubic root of 20742441 is about 274.7598608870.

The spelling of 20742441 in words is "twenty million, seven hundred forty-two thousand, four hundred forty-one".