20040042230 has 16 divisors (see below), whose sum is σ = 38846851344. Its totient is φ = 7399400160.

The previous prime is 20040042229. The next prime is 20040042241. The reversal of 20040042230 is 3224004002.

It is a junction number, because it is equal to n+sod(n) for n = 20040042199 and 20040042208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77076956 + ... + 77077215.

It is an arithmetic number, because the mean of its divisors is an integer number (2427928209).

Almost surely, 2^20040042230 is an apocalyptic number.

20040042230 is a deficient number, since it is larger than the sum of its proper divisors (18806809114).

20040042230 is a wasteful number, since it uses less digits than its factorization.

20040042230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154154191.

The product of its (nonzero) digits is 384, while the sum is 17.

Adding to 20040042230 its reverse (3224004002), we get a palindrome (23264046232).

The spelling of 20040042230 in words is "twenty billion, forty million, forty-two thousand, two hundred thirty".