11421402434 has 16 divisors (see below), whose sum is σ = 19535250168. Its totient is φ = 4961332992.

The previous prime is 11421402413. The next prime is 11421402463. The reversal of 11421402434 is 43420412411.

It can be written as a sum of positive squares in 4 ways, for example, as 11352263209 + 69139225 = 106547^2 + 8315^2 .

It is a super-2 number, since 2×11421402434² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12919697 + ... + 12920580.

Almost surely, 2^11421402434 is an apocalyptic number.

11421402434 is a deficient number, since it is larger than the sum of its proper divisors (8113847734).

11421402434 is a wasteful number, since it uses less digits than its factorization.

11421402434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25840309.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 11421402434 its reverse (43420412411), we get a palindrome (54841814845).

The spelling of 11421402434 in words is "eleven billion, four hundred twenty-one million, four hundred two thousand, four hundred thirty-four".