11421405434 has 4 divisors (see below), whose sum is σ = 17132108154. Its totient is φ = 5710702716.

The previous prime is 11421405433. The next prime is 11421405461. The reversal of 11421405434 is 43450412411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7973954209 + 3447451225 = 89297^2 + 58715^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11421405397 and 11421405406.

It is not an unprimeable number, because it can be changed into a prime (11421405433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2855351357 + ... + 2855351360.

Almost surely, 2^11421405434 is an apocalyptic number.

11421405434 is a deficient number, since it is larger than the sum of its proper divisors (5710702720).

11421405434 is an equidigital number, since it uses as much as digits as its factorization.

11421405434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5710702719.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 11421405434 its reverse (43450412411), we get a palindrome (54871817845).

The spelling of 11421405434 in words is "eleven billion, four hundred twenty-one million, four hundred five thousand, four hundred thirty-four".