1240140202400 has 72 divisors (see below), whose sum is σ = 3302718862464. Its totient is φ = 450960070400.

The previous prime is 1240140202381. The next prime is 1240140202403. The reversal of 1240140202400 is 42020410421.

It is a super-3 number, since 3×1240140202400³ (a number of 37 digits) contains 333 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1240140202403) 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 11 ways as a sum of consecutive naturals, for example, 70453712 + ... + 70471311.

It is an arithmetic number, because the mean of its divisors is an integer number (45871095312).

Almost surely, 2^{1240140202400} is an apocalyptic number.

1240140202400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240140202400 is an abundant number, since it is smaller than the sum of its proper divisors (2062578660064).

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

1240140202400 is a wasteful number, since it uses less digits than its factorization.

1240140202400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140925054 (or 140925041 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 1240140202400 its reverse (42020410421), we get a palindrome (1282160612821).

The spelling of 1240140202400 in words is "one trillion, two hundred forty billion, one hundred forty million, two hundred two thousand, four hundred".