1214013240 has 192 divisors, whose sum is σ = 4343919840. Its totient is φ = 291594240.

The previous prime is 1214013223. The next prime is 1214013293. The reversal of 1214013240 is 423104121.

1214013240 is a `hidden beast` number, since 1 + 21 + 401 + 3 + 240 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 446124 + ... + 448836.

Almost surely, 2^1214013240 is an apocalyptic number.

1214013240 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 1214013240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2171959920).

1214013240 is an abundant number, since it is smaller than the sum of its proper divisors (3129906600).

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

1214013240 is a wasteful number, since it uses less digits than its factorization.

1214013240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2854 (or 2847 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1214013240 is about 34842.6927776830. The cubic root of 1214013240 is about 1066.7790406783.

Adding to 1214013240 its reverse (423104121), we get a palindrome (1637117361).

The spelling of 1214013240 in words is "one billion, two hundred fourteen million, thirteen thousand, two hundred forty".