20254742 has 8 divisors (see below), whose sum is σ = 30683232. Its totient is φ = 10027000.

The previous prime is 20254733. The next prime is 20254747. The reversal of 20254742 is 24745202.

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

20254742 is a modest number, since divided by 54742 gives 202 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20254747) 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, 49934 + ... + 50337.

It is an arithmetic number, because the mean of its divisors is an integer number (3835404).

Almost surely, 2^20254742 is an apocalyptic number.

20254742 is a deficient number, since it is larger than the sum of its proper divisors (10428490).

20254742 is a wasteful number, since it uses less digits than its factorization.

20254742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100374.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 20254742 is about 4500.5268580467. The cubic root of 20254742 is about 272.5893632787.

Adding to 20254742 its reverse (24745202), we get a palindrome (44999944).

The spelling of 20254742 in words is "twenty million, two hundred fifty-four thousand, seven hundred forty-two".