1345353421 has 8 divisors (see below), whose sum is σ = 1404861120. Its totient is φ = 1285930272.

The previous prime is 1345353419. The next prime is 1345353433. The reversal of 1345353421 is 1243535431.

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

It is a cyclic number.

It is not a de Polignac number, because 1345353421 - 2¹ = 1345353419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345353461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12550 + ... + 53368.

It is an arithmetic number, because the mean of its divisors is an integer number (175607640).

Almost surely, 2^1345353421 is an apocalyptic number.

It is an amenable number.

1345353421 is a deficient number, since it is larger than the sum of its proper divisors (59507699).

1345353421 is a wasteful number, since it uses less digits than its factorization.

1345353421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42275.

The product of its digits is 21600, while the sum is 31.

The square root of 1345353421 is about 36679.0597071408. The cubic root of 1345353421 is about 1103.9399813889.

Adding to 1345353421 its reverse (1243535431), we get a palindrome (2588888852).

The spelling of 1345353421 in words is "one billion, three hundred forty-five million, three hundred fifty-three thousand, four hundred twenty-one".