145542437 has 2 divisors, whose sum is σ = 145542438. Its totient is φ = 145542436.

The previous prime is 145542391. The next prime is 145542517. The reversal of 145542437 is 734245541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121198081 + 24344356 = 11009^2 + 4934^2 .

It is an emirp because it is prime and its reverse (734245541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145542437 - 2⁶ = 145542373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145542397 and 145542406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145542637) 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 as a sum of consecutive naturals, namely, 72771218 + 72771219.

It is an arithmetic number, because the mean of its divisors is an integer number (72771219).

Almost surely, 2^145542437 is an apocalyptic number.

It is an amenable number.

145542437 is a deficient number, since it is larger than the sum of its proper divisors (1).

145542437 is an equidigital number, since it uses as much as digits as its factorization.

145542437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200, while the sum is 35.

The square root of 145542437 is about 12064.0970238141. The cubic root of 145542437 is about 526.0130847752.

Adding to 145542437 its reverse (734245541), we get a palindrome (879787978).

The spelling of 145542437 in words is "one hundred forty-five million, five hundred forty-two thousand, four hundred thirty-seven".