20042061 has 8 divisors (see below), whose sum is σ = 28778400. Its totient is φ = 12333552.

The previous prime is 20042059. The next prime is 20042101. The reversal of 20042061 is 16024002.

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

It is not a de Polignac number, because 20042061 - 2¹ = 20042059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20042061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20042041) 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, 256911 + ... + 256988.

It is an arithmetic number, because the mean of its divisors is an integer number (3597300).

Almost surely, 2^20042061 is an apocalyptic number.

It is an amenable number.

20042061 is a deficient number, since it is larger than the sum of its proper divisors (8736339).

20042061 is a wasteful number, since it uses less digits than its factorization.

20042061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513915.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20042061 is about 4476.8360479249. The cubic root of 20042061 is about 271.6319136210.

Adding to 20042061 its reverse (16024002), we get a palindrome (36066063).

The spelling of 20042061 in words is "twenty million, forty-two thousand, sixty-one".