1111402421 has 16 divisors (see below), whose sum is σ = 1237690368. Its totient is φ = 993158400.

The previous prime is 1111402417. The next prime is 1111402423. The reversal of 1111402421 is 1242041111.

It is a cyclic number.

It is not a de Polignac number, because 1111402421 - 2² = 1111402417 is a prime.

It is a super-2 number, since 2×1111402421² = 2470430682809322482, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1111402421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111402423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8036 + ... + 47826.

It is an arithmetic number, because the mean of its divisors is an integer number (77355648).

Almost surely, 2^1111402421 is an apocalyptic number.

It is an amenable number.

1111402421 is a deficient number, since it is larger than the sum of its proper divisors (126287947).

1111402421 is a wasteful number, since it uses less digits than its factorization.

1111402421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39892.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1111402421 is about 33337.7026952968. The cubic root of 1111402421 is about 1035.8346774975.

Adding to 1111402421 its reverse (1242041111), we get a palindrome (2353443532).

The spelling of 1111402421 in words is "one billion, one hundred eleven million, four hundred two thousand, four hundred twenty-one".