11420401043 has 4 divisors (see below), whose sum is σ = 11430700080. Its totient is φ = 11410102008.

The previous prime is 11420401039. The next prime is 11420401061. The reversal of 11420401043 is 34010402411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34010402411 = 115211 ⋅295201.

It is a cyclic number.

It is not a de Polignac number, because 11420401043 - 2² = 11420401039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11420401033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5147855 + ... + 5150072.

It is an arithmetic number, because the mean of its divisors is an integer number (2857675020).

Almost surely, 2^11420401043 is an apocalyptic number.

11420401043 is a deficient number, since it is larger than the sum of its proper divisors (10299037).

11420401043 is a wasteful number, since it uses less digits than its factorization.

11420401043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10299036.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 11420401043 its reverse (34010402411), we get a palindrome (45430803454).

The spelling of 11420401043 in words is "eleven billion, four hundred twenty million, four hundred one thousand, forty-three".