1342251440 has 80 divisors (see below), whose sum is σ = 3212606880. Its totient is φ = 521226240.

The previous prime is 1342251419. The next prime is 1342251509. The reversal of 1342251440 is 441522431.

It is a tau number, because it is divible by the number of its divisors (80).

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, 750227 + ... + 752013.

It is an arithmetic number, because the mean of its divisors is an integer number (40157586).

Almost surely, 2^1342251440 is an apocalyptic number.

1342251440 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 1342251440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1606303440).

1342251440 is an abundant number, since it is smaller than the sum of its proper divisors (1870355440).

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

1342251440 is a wasteful number, since it uses less digits than its factorization.

1342251440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070 (or 2064 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1342251440 is about 36636.7498558483. The cubic root of 1342251440 is about 1103.0908770940.

Adding to 1342251440 its reverse (441522431), we get a palindrome (1783773871).

The spelling of 1342251440 in words is "one billion, three hundred forty-two million, two hundred fifty-one thousand, four hundred forty".