1115280421 has 8 divisors (see below), whose sum is σ = 1132015104. Its totient is φ = 1098670560.

The previous prime is 1115280403. The next prime is 1115280433. The reversal of 1115280421 is 1240825111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1115280421 - 2⁵ = 1115280389 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 (1115280721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13125 + ... + 49018.

It is an arithmetic number, because the mean of its divisors is an integer number (141501888).

Almost surely, 2^1115280421 is an apocalyptic number.

It is an amenable number.

1115280421 is a deficient number, since it is larger than the sum of its proper divisors (16734683).

1115280421 is a wasteful number, since it uses less digits than its factorization.

1115280421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62411.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 1115280421 is about 33395.8144233675. The cubic root of 1115280421 is about 1037.0380531381.

The spelling of 1115280421 in words is "one billion, one hundred fifteen million, two hundred eighty thousand, four hundred twenty-one".