11420420023 has 16 divisors (see below), whose sum is σ = 12335431680. Its totient is φ = 10540743136.

The previous prime is 11420419999. The next prime is 11420420029. The reversal of 11420420023 is 32002402411.

It is a cyclic number.

It is not a de Polignac number, because 11420420023 - 2²¹ = 11418322871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11420420029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1347786 + ... + 1356232.

It is an arithmetic number, because the mean of its divisors is an integer number (770964480).

Almost surely, 2^11420420023 is an apocalyptic number.

11420420023 is a deficient number, since it is larger than the sum of its proper divisors (915011657).

11420420023 is a wasteful number, since it uses less digits than its factorization.

11420420023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10526.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 11420420023 its reverse (32002402411), we get a palindrome (43422822434).

The spelling of 11420420023 in words is "eleven billion, four hundred twenty million, four hundred twenty thousand, twenty-three".