145734013 has 4 divisors (see below), whose sum is σ = 154306620. Its totient is φ = 137161408.

The previous prime is 145733999. The next prime is 145734031. The reversal of 145734013 is 310437541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310437541 = 3539 ⋅87719.

It can be written as a sum of positive squares in 2 ways, for example, as 55920484 + 89813529 = 7478^2 + 9477^2 .

It is a cyclic number.

It is not a de Polignac number, because 145734013 - 2¹³ = 145725821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145734073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4286278 + ... + 4286311.

It is an arithmetic number, because the mean of its divisors is an integer number (38576655).

Almost surely, 2^145734013 is an apocalyptic number.

It is an amenable number.

145734013 is a deficient number, since it is larger than the sum of its proper divisors (8572607).

145734013 is an equidigital number, since it uses as much as digits as its factorization.

145734013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8572606.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 145734013 is about 12072.0343356039. The cubic root of 145734013 is about 526.2437787737.

The spelling of 145734013 in words is "one hundred forty-five million, seven hundred thirty-four thousand, thirteen".