20542454 has 8 divisors (see below), whose sum is σ = 30929040. Its totient is φ = 10232776.

The previous prime is 20542453. The next prime is 20542463. The reversal of 20542454 is 45424502.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20542451) 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, 18554 + ... + 19629.

It is an arithmetic number, because the mean of its divisors is an integer number (3866130).

Almost surely, 2^20542454 is an apocalyptic number.

20542454 is a deficient number, since it is larger than the sum of its proper divisors (10386586).

20542454 is a wasteful number, since it uses less digits than its factorization.

20542454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38454.

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 20542454 is about 4532.3784043259. The cubic root of 20542454 is about 273.8739808015.

Adding to 20542454 its reverse (45424502), we get a palindrome (65966956).

The spelling of 20542454 in words is "twenty million, five hundred forty-two thousand, four hundred fifty-four".