1345540423 has 8 divisors (see below), whose sum is σ = 1416713600. Its totient is φ = 1274402808.

The previous prime is 1345540369. The next prime is 1345540507. The reversal of 1345540423 is 3240455431.

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

It is not a de Polignac number, because 1345540423 - 2²⁵ = 1311985991 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 (1346540423) 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 7 ways as a sum of consecutive naturals, for example, 108958 + ... + 120676.

It is an arithmetic number, because the mean of its divisors is an integer number (177089200).

Almost surely, 2^1345540423 is an apocalyptic number.

1345540423 is a deficient number, since it is larger than the sum of its proper divisors (71173177).

1345540423 is a wasteful number, since it uses less digits than its factorization.

1345540423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17781.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 1345540423 is about 36681.6087842395. The cubic root of 1345540423 is about 1103.9911276570.

Adding to 1345540423 its reverse (3240455431), we get a palindrome (4585995854).

The spelling of 1345540423 in words is "one billion, three hundred forty-five million, five hundred forty thousand, four hundred twenty-three".