1342208640 has 128 divisors (see below), whose sum is σ = 4503585600. Its totient is φ = 339075072.

The previous prime is 1342208597. The next prime is 1342208663. The reversal of 1342208640 is 468022431.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1342208598 and 1342208607.

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, 18084 + ... + 54876.

Almost surely, 2^1342208640 is an apocalyptic number.

1342208640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1342208640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2251792800).

1342208640 is an abundant number, since it is smaller than the sum of its proper divisors (3161376960).

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

1342208640 is a wasteful number, since it uses less digits than its factorization.

1342208640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36834 (or 36822 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 1342208640 is about 36636.1657382429. The cubic root of 1342208640 is about 1103.0791523183.

The spelling of 1342208640 in words is "one billion, three hundred forty-two million, two hundred eight thousand, six hundred forty".