1240642616250 has 160 divisors (see below), whose sum is σ = 3161681538048. Its totient is φ = 324332320000.

The previous prime is 1240642616249. The next prime is 1240642616251. The reversal of 1240642616250 is 526162460421.

It is an interprime number because it is at equal distance from previous prime (1240642616249) and next prime (1240642616251).

It is a junction number, because it is equal to n+sod(n) for n = 1240642616199 and 1240642616208.

It is not an unprimeable number, because it can be changed into a prime (1240642616251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 419559772 + ... + 419562728.

Almost surely, 2^{1240642616250} is an apocalyptic number.

1240642616250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1240642616250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1580840769024).

1240642616250 is an abundant number, since it is smaller than the sum of its proper divisors (1921038921798).

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

1240642616250 is a wasteful number, since it uses less digits than its factorization.

1240642616250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5146 (or 5131 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 1240642616250 in words is "one trillion, two hundred forty billion, six hundred forty-two million, six hundred sixteen thousand, two hundred fifty".