1351440342 has 64 divisors (see below), whose sum is σ = 3444887040. Its totient is φ = 384702048.

The previous prime is 1351440323. The next prime is 1351440353. The reversal of 1351440342 is 2430441531.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98253 + ... + 111159.

It is an arithmetic number, because the mean of its divisors is an integer number (53826360).

Almost surely, 2^1351440342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1351440342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1722443520).

1351440342 is an abundant number, since it is smaller than the sum of its proper divisors (2093446698).

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

1351440342 is a wasteful number, since it uses less digits than its factorization.

1351440342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13202 (or 13196 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 1351440342 is about 36761.9414884470. The cubic root of 1351440342 is about 1105.6023665769.

Adding to 1351440342 its reverse (2430441531), we get a palindrome (3781881873).

The spelling of 1351440342 in words is "one billion, three hundred fifty-one million, four hundred forty thousand, three hundred forty-two".