20950042 has 8 divisors (see below), whose sum is σ = 31633632. Its totient is φ = 10405500.

The previous prime is 20950037. The next prime is 20950049. The reversal of 20950042 is 24005902.

It is a happy number.

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

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 20949995 and 20950022.

It is not an unprimeable number, because it can be changed into a prime (20950049) 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, 34384 + ... + 34987.

It is an arithmetic number, because the mean of its divisors is an integer number (3954204).

Almost surely, 2^20950042 is an apocalyptic number.

20950042 is a deficient number, since it is larger than the sum of its proper divisors (10683590).

20950042 is a wasteful number, since it uses less digits than its factorization.

20950042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69524.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 20950042 is about 4577.1215845769. The cubic root of 20950042 is about 275.6734656128.

Adding to 20950042 its reverse (24005902), we get a palindrome (44955944).

The spelling of 20950042 in words is "twenty million, nine hundred fifty thousand, forty-two".