20610542 has 4 divisors (see below), whose sum is σ = 30915816. Its totient is φ = 10305270.

The previous prime is 20610539. The next prime is 20610559. The reversal of 20610542 is 24501602.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5152634 + ... + 5152637.

It is an arithmetic number, because the mean of its divisors is an integer number (7728954).

Almost surely, 2^20610542 is an apocalyptic number.

20610542 is a deficient number, since it is larger than the sum of its proper divisors (10305274).

20610542 is a wasteful number, since it uses less digits than its factorization.

20610542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10305273.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20610542 is about 4539.8834786809. The cubic root of 20610542 is about 274.1762323733.

The spelling of 20610542 in words is "twenty million, six hundred ten thousand, five hundred forty-two".