1345440042 has 24 divisors (see below), whose sum is σ = 2942368416. Its totient is φ = 444287976.

The previous prime is 1345440017. The next prime is 1345440059. The reversal of 1345440042 is 2400445431.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1345439988 and 1345440015.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 347358 + ... + 351209.

It is an arithmetic number, because the mean of its divisors is an integer number (122598684).

Almost surely, 2^1345440042 is an apocalyptic number.

1345440042 is an abundant number, since it is smaller than the sum of its proper divisors (1596928374).

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

1345440042 is a wasteful number, since it uses less digits than its factorization.

1345440042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698682 (or 698679 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 1345440042 is about 36680.2404844897. The cubic root of 1345440042 is about 1103.9636733872.

Adding to 1345440042 its reverse (2400445431), we get a palindrome (3745885473).

The spelling of 1345440042 in words is "one billion, three hundred forty-five million, four hundred forty thousand, forty-two".