1345424242 has 8 divisors (see below), whose sum is σ = 2083237632. Its totient is φ = 651011700.

The previous prime is 1345424221. The next prime is 1345424243. The reversal of 1345424242 is 2424245431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×1345424242³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (1345424243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10850134 + ... + 10850257.

It is an arithmetic number, because the mean of its divisors is an integer number (260404704).

Almost surely, 2^1345424242 is an apocalyptic number.

1345424242 is a deficient number, since it is larger than the sum of its proper divisors (737813390).

1345424242 is a wasteful number, since it uses less digits than its factorization.

1345424242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21700424.

The product of its digits is 30720, while the sum is 31.

The square root of 1345424242 is about 36680.0251090427. The cubic root of 1345424242 is about 1103.9593519524.

Adding to 1345424242 its reverse (2424245431), we get a palindrome (3769669673).

The spelling of 1345424242 in words is "one billion, three hundred forty-five million, four hundred twenty-four thousand, two hundred forty-two".