1340304042 has 128 divisors (see below), whose sum is σ = 3553320960. Its totient is φ = 326496960.

The previous prime is 1340304013. The next prime is 1340304073. The reversal of 1340304042 is 2404030431.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 938533 + ... + 939959.

It is an arithmetic number, because the mean of its divisors is an integer number (27760320).

Almost surely, 2^1340304042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1340304042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1776660480).

1340304042 is an abundant number, since it is smaller than the sum of its proper divisors (2213016918).

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

1340304042 is a wasteful number, since it uses less digits than its factorization.

1340304042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1340304042 is about 36610.1630971510. The cubic root of 1340304042 is about 1102.5571478134.

Adding to 1340304042 its reverse (2404030431), we get a palindrome (3744334473).

The spelling of 1340304042 in words is "one billion, three hundred forty million, three hundred four thousand, forty-two".