1214143040 has 84 divisors (see below), whose sum is σ = 3178007868. Its totient is φ = 441492480.

The previous prime is 1214143033. The next prime is 1214143061. The reversal of 1214143040 is 403414121.

It can be written as a sum of positive squares in 2 ways, for example, as 678498304 + 535644736 = 26048^2 + 23144^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23042 + ... + 54398.

It is an arithmetic number, because the mean of its divisors is an integer number (37833427).

Almost surely, 2^1214143040 is an apocalyptic number.

1214143040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1214143040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1589003934).

1214143040 is an abundant number, since it is smaller than the sum of its proper divisors (1963864828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1214143040 is a wasteful number, since it uses less digits than its factorization.

1214143040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31396 (or 31375 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1214143040 is about 34844.5553853109. Note that the first 3 decimals coincide. The cubic root of 1214143040 is about 1066.8170586560.

Adding to 1214143040 its reverse (403414121), we get a palindrome (1617557161).

The spelling of 1214143040 in words is "one billion, two hundred fourteen million, one hundred forty-three thousand, forty".