20042150 has 72 divisors (see below), whose sum is σ = 42255480. Its totient is φ = 7050240.

The previous prime is 20042117. The next prime is 20042173. The reversal of 20042150 is 5124002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 274514 + ... + 274586.

Almost surely, 2^20042150 is an apocalyptic number.

20042150 is an abundant number, since it is smaller than the sum of its proper divisors (22213330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20042150 is a wasteful number, since it uses less digits than its factorization.

20042150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 20042150 is about 4476.8459879697. The cubic root of 20042150 is about 271.6323156955.

Adding to 20042150 its reverse (5124002), we get a palindrome (25166152).

The spelling of 20042150 in words is "twenty million, forty-two thousand, one hundred fifty".