220420134423 has 12 divisors (see below), whose sum is σ = 318468407400. Its totient is φ = 146908093776.

The previous prime is 220420134419. The next prime is 220420134449. The reversal of 220420134423 is 324431024022.

220420134423 is a `hidden beast` number, since 2 + 2 + 0 + 4 + 201 + 34 + 423 = 666.

It is not a de Polignac number, because 220420134423 - 2² = 220420134419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220420134463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3185748 + ... + 3254201.

It is an arithmetic number, because the mean of its divisors is an integer number (26539033950).

Almost surely, 2^220420134423 is an apocalyptic number.

220420134423 is a deficient number, since it is larger than the sum of its proper divisors (98048272977).

220420134423 is a wasteful number, since it uses less digits than its factorization.

220420134423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6443758 (or 6443755 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 220420134423 its reverse (324431024022), we get a palindrome (544851158445).

The spelling of 220420134423 in words is "two hundred twenty billion, four hundred twenty million, one hundred thirty-four thousand, four hundred twenty-three".