1240256514 has 64 divisors (see below), whose sum is σ = 2980880640. Its totient is φ = 336510720.

The previous prime is 1240256503. The next prime is 1240256527. The reversal of 1240256514 is 4156520421.

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, 65952 + ... + 82644.

It is an arithmetic number, because the mean of its divisors is an integer number (46576260).

Almost surely, 2^1240256514 is an apocalyptic number.

1240256514 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1240256514, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1490440320).

1240256514 is an abundant number, since it is smaller than the sum of its proper divisors (1740624126).

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

1240256514 is a wasteful number, since it uses less digits than its factorization.

1240256514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16795.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 1240256514 is about 35217.2757890215. The cubic root of 1240256514 is about 1074.4111471983.

Adding to 1240256514 its reverse (4156520421), we get a palindrome (5396776935).

The spelling of 1240256514 in words is "one billion, two hundred forty million, two hundred fifty-six thousand, five hundred fourteen".