20461942 has 8 divisors (see below), whose sum is σ = 30713256. Its totient is φ = 10224192.

The previous prime is 20461939. The next prime is 20461943. The reversal of 20461942 is 24916402.

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

It is a super-2 number, since 2×20461942² = 837382140822728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20461942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20461943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2278 + ... + 6790.

It is an arithmetic number, because the mean of its divisors is an integer number (3839157).

Almost surely, 2^20461942 is an apocalyptic number.

20461942 is a deficient number, since it is larger than the sum of its proper divisors (10251314).

20461942 is a wasteful number, since it uses less digits than its factorization.

20461942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6782.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 20461942 is about 4523.4878136235. The cubic root of 20461942 is about 273.5157144220.

The spelling of 20461942 in words is "twenty million, four hundred sixty-one thousand, nine hundred forty-two".