145020437 has 2 divisors, whose sum is σ = 145020438. Its totient is φ = 145020436.

The previous prime is 145020409. The next prime is 145020439. The reversal of 145020437 is 734020541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87123556 + 57896881 = 9334^2 + 7609^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145020437 is a prime.

Together with 145020439, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145020439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72510218 + 72510219.

It is an arithmetic number, because the mean of its divisors is an integer number (72510219).

Almost surely, 2^145020437 is an apocalyptic number.

It is an amenable number.

145020437 is a deficient number, since it is larger than the sum of its proper divisors (1).

145020437 is an equidigital number, since it uses as much as digits as its factorization.

145020437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 145020437 is about 12042.4431491288. The cubic root of 145020437 is about 525.3834682910.

Adding to 145020437 its reverse (734020541), we get a palindrome (879040978).

The spelling of 145020437 in words is "one hundred forty-five million, twenty thousand, four hundred thirty-seven".