148742521 has 2 divisors, whose sum is σ = 148742522. Its totient is φ = 148742520.

The previous prime is 148742513. The next prime is 148742533. The reversal of 148742521 is 125247841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117505600 + 31236921 = 10840^2 + 5589^2 .

It is a cyclic number.

It is not a de Polignac number, because 148742521 - 2³ = 148742513 is a prime.

It is not a weakly prime, because it can be changed into another prime (148742501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74371260 + 74371261.

It is an arithmetic number, because the mean of its divisors is an integer number (74371261).

Almost surely, 2^148742521 is an apocalyptic number.

It is an amenable number.

148742521 is a deficient number, since it is larger than the sum of its proper divisors (1).

148742521 is an equidigital number, since it uses as much as digits as its factorization.

148742521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17920, while the sum is 34.

The square root of 148742521 is about 12196.0043046893. The cubic root of 148742521 is about 529.8403708182.

The spelling of 148742521 in words is "one hundred forty-eight million, seven hundred forty-two thousand, five hundred twenty-one".