1440121214 has 16 divisors (see below), whose sum is σ = 2498525568. Its totient is φ = 609758232.

The previous prime is 1440121211. The next prime is 1440121217. The reversal of 1440121214 is 4121210441.

It is an interprime number because it is at equal distance from previous prime (1440121211) and next prime (1440121217).

It is a super-2 number, since 2×1440121214² = 4147898222025667592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440121211) 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 7 ways as a sum of consecutive naturals, for example, 618512 + ... + 620835.

It is an arithmetic number, because the mean of its divisors is an integer number (156157848).

Almost surely, 2^1440121214 is an apocalyptic number.

1440121214 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1440121214 is a deficient number, since it is larger than the sum of its proper divisors (1058404354).

1440121214 is a wasteful number, since it uses less digits than its factorization.

1440121214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239439.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1440121214 is about 37948.9290230963. The cubic root of 1440121214 is about 1129.2749189741.

Adding to 1440121214 its reverse (4121210441), we get a palindrome (5561331655).

The spelling of 1440121214 in words is "one billion, four hundred forty million, one hundred twenty-one thousand, two hundred fourteen".