145206403 has 2 divisors, whose sum is σ = 145206404. Its totient is φ = 145206402.

The previous prime is 145206377. The next prime is 145206427. The reversal of 145206403 is 304602541.

It is a strong prime.

It is an emirp because it is prime and its reverse (304602541) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145206403 is a prime.

It is not a weakly prime, because it can be changed into another prime (145206433) 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, 72603201 + 72603202.

It is an arithmetic number, because the mean of its divisors is an integer number (72603202).

Almost surely, 2^145206403 is an apocalyptic number.

145206403 is a deficient number, since it is larger than the sum of its proper divisors (1).

145206403 is an equidigital number, since it uses as much as digits as its factorization.

145206403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 145206403 is about 12050.1619491192. The cubic root of 145206403 is about 525.6079463730.

Adding to 145206403 its reverse (304602541), we get a palindrome (449808944).

The spelling of 145206403 in words is "one hundred forty-five million, two hundred six thousand, four hundred three".