342640265440 has 96 divisors (see below), whose sum is σ = 886742730720. Its totient is φ = 124079308800.

The previous prime is 342640265431. The next prime is 342640265467. The reversal of 342640265440 is 44562046243.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 342640265393 and 342640265402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20256 + ... + 828064.

It is an arithmetic number, because the mean of its divisors is an integer number (9236903445).

Almost surely, 2^342640265440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 342640265440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (443371365360).

342640265440 is an abundant number, since it is smaller than the sum of its proper divisors (544102465280).

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

342640265440 is a wasteful number, since it uses less digits than its factorization.

342640265440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808076 (or 808068 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 40.

The spelling of 342640265440 in words is "three hundred forty-two billion, six hundred forty million, two hundred sixty-five thousand, four hundred forty".