1342040040 has 144 divisors (see below), whose sum is σ = 4794344100. Its totient is φ = 325332480.

The previous prime is 1342040039. The next prime is 1342040101. The reversal of 1342040040 is 400402431.

It can be written as a sum of positive squares in 2 ways, for example, as 1322485956 + 19554084 = 36366^2 + 4422^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1342039995 and 1342040022.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 28156 + ... + 58964.

Almost surely, 2^1342040040 is an apocalyptic number.

1342040040 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 1342040040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2397172050).

1342040040 is an abundant number, since it is smaller than the sum of its proper divisors (3452304060).

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

1342040040 is a wasteful number, since it uses less digits than its factorization.

1342040040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30848 (or 30830 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1342040040 is about 36633.8646609937. The cubic root of 1342040040 is about 1103.0329630431.

Adding to 1342040040 its reverse (400402431), we get a palindrome (1742442471).

The spelling of 1342040040 in words is "one billion, three hundred forty-two million, forty thousand, forty".