20055742 has 16 divisors (see below), whose sum is σ = 34438752. Its totient is φ = 8580960.

The previous prime is 20055731. The next prime is 20055743. The reversal of 20055742 is 24755002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20055743) 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, 15928 + ... + 17140.

It is an arithmetic number, because the mean of its divisors is an integer number (2152422).

Almost surely, 2^20055742 is an apocalyptic number.

20055742 is a deficient number, since it is larger than the sum of its proper divisors (14383010).

20055742 is a wasteful number, since it uses less digits than its factorization.

20055742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 20055742 is about 4478.3637636976. The cubic root of 20055742 is about 271.6937061840.

The spelling of 20055742 in words is "twenty million, fifty-five thousand, seven hundred forty-two".