1244421115 has 32 divisors (see below), whose sum is σ = 1749878784. Its totient is φ = 831841920.

The previous prime is 1244421109. The next prime is 1244421149. The reversal of 1244421115 is 5111244421.

It is not a de Polignac number, because 1244421115 - 2⁹ = 1244420603 is a prime.

It is a super-2 number, since 2×1244421115² = 3097167822915686450, which contains 22 as substring.

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 1244421115.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 454300 + ... + 457030.

It is an arithmetic number, because the mean of its divisors is an integer number (54683712).

Almost surely, 2^1244421115 is an apocalyptic number.

1244421115 is a deficient number, since it is larger than the sum of its proper divisors (505457669).

1244421115 is a wasteful number, since it uses less digits than its factorization.

1244421115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3067.

The product of its digits is 1280, while the sum is 25.

The square root of 1244421115 is about 35276.3534821841. The cubic root of 1244421115 is about 1075.6123758088.

Adding to 1244421115 its reverse (5111244421), we get a palindrome (6355665536).

The spelling of 1244421115 in words is "one billion, two hundred forty-four million, four hundred twenty-one thousand, one hundred fifteen".