146503121 has 2 divisors, whose sum is σ = 146503122. Its totient is φ = 146503120.

The previous prime is 146503111. The next prime is 146503139. The reversal of 146503121 is 121305641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86285521 + 60217600 = 9289^2 + 7760^2 .

It is an emirp because it is prime and its reverse (121305641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 146503121 - 2⁶ = 146503057 is a prime.

It is not a weakly prime, because it can be changed into another prime (146503111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73251560 + 73251561.

It is an arithmetic number, because the mean of its divisors is an integer number (73251561).

Almost surely, 2^146503121 is an apocalyptic number.

It is an amenable number.

146503121 is a deficient number, since it is larger than the sum of its proper divisors (1).

146503121 is an equidigital number, since it uses as much as digits as its factorization.

146503121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 146503121 is about 12103.8473635452. The cubic root of 146503121 is about 527.1679015940.

Adding to 146503121 its reverse (121305641), we get a palindrome (267808762).

It can be divided in two parts, 14650 and 3121, that added together give a palindrome (17771).

The spelling of 146503121 in words is "one hundred forty-six million, five hundred three thousand, one hundred twenty-one".