145542013 has 2 divisors, whose sum is σ = 145542014. Its totient is φ = 145542012.

The previous prime is 145541969. The next prime is 145542017. The reversal of 145542013 is 310245541.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110944089 + 34597924 = 10533^2 + 5882^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145542013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145542017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72771006 + 72771007.

It is an arithmetic number, because the mean of its divisors is an integer number (72771007).

Almost surely, 2^145542013 is an apocalyptic number.

It is an amenable number.

145542013 is a deficient number, since it is larger than the sum of its proper divisors (1).

145542013 is an equidigital number, since it uses as much as digits as its factorization.

145542013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 145542013 is about 12064.0794509983. The cubic root of 145542013 is about 526.0125739740.

Adding to 145542013 its reverse (310245541), we get a palindrome (455787554).

The spelling of 145542013 in words is "one hundred forty-five million, five hundred forty-two thousand, thirteen".