340121545240 has 96 divisors (see below), whose sum is σ = 855724309200. Its totient is φ = 121306429440.

The previous prime is 340121545217. The next prime is 340121545243. The reversal of 340121545240 is 42545121043.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340121545243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 554631 + ... + 993910.

Almost surely, 2^340121545240 is an apocalyptic number.

It is an amenable number.

340121545240 is an abundant number, since it is smaller than the sum of its proper divisors (515602763960).

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

340121545240 is a wasteful number, since it uses less digits than its factorization.

340121545240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548605 (or 1548584 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 340121545240 its reverse (42545121043), we get a palindrome (382666666283).

The spelling of 340121545240 in words is "three hundred forty billion, one hundred twenty-one million, five hundred forty-five thousand, two hundred forty".