145340013 has 64 divisors (see below), whose sum is σ = 252887040. Its totient is φ = 72154368.

The previous prime is 145340009. The next prime is 145340017. The reversal of 145340013 is 310043541.

It is an interprime number because it is at equal distance from previous prime (145340009) and next prime (145340017).

It is not a de Polignac number, because 145340013 - 2² = 145340009 is a prime.

It is a super-2 number, since 2×145340013² = 42247438757680338, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145340017) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 495895 + ... + 496187.

It is an arithmetic number, because the mean of its divisors is an integer number (3951360).

Almost surely, 2^145340013 is an apocalyptic number.

145340013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

145340013 is a deficient number, since it is larger than the sum of its proper divisors (107547027).

145340013 is a wasteful number, since it uses less digits than its factorization.

145340013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 145340013 is about 12055.7045833083. The cubic root of 145340013 is about 525.7691076531.

Adding to 145340013 its reverse (310043541), we get a palindrome (455383554).

The spelling of 145340013 in words is "one hundred forty-five million, three hundred forty thousand, thirteen".