20542702 has 4 divisors (see below), whose sum is σ = 30814056. Its totient is φ = 10271350.

The previous prime is 20542673. The next prime is 20542729. The reversal of 20542702 is 20724502.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5135674 + ... + 5135677.

It is an arithmetic number, because the mean of its divisors is an integer number (7703514).

Almost surely, 2^20542702 is an apocalyptic number.

20542702 is a deficient number, since it is larger than the sum of its proper divisors (10271354).

20542702 is a wasteful number, since it uses less digits than its factorization.

20542702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10271353.

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 20542702 is about 4532.4057629475. The cubic root of 20542702 is about 273.8750829170.

The spelling of 20542702 in words is "twenty million, five hundred forty-two thousand, seven hundred two".