20542937 has 8 divisors (see below), whose sum is σ = 20930400. Its totient is φ = 20157984.

The previous prime is 20542889. The next prime is 20542939. The reversal of 20542937 is 73924502.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20542937 - 2¹² = 20538841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20542939) 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, 24989 + ... + 25797.

It is an arithmetic number, because the mean of its divisors is an integer number (2616300).

Almost surely, 2^20542937 is an apocalyptic number.

It is an amenable number.

20542937 is a deficient number, since it is larger than the sum of its proper divisors (387463).

20542937 is an equidigital number, since it uses as much as digits as its factorization.

20542937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 20542937 is about 4532.4316872955. The cubic root of 20542937 is about 273.8761272522.

The spelling of 20542937 in words is "twenty million, five hundred forty-two thousand, nine hundred thirty-seven".