148680421 has 2 divisors, whose sum is σ = 148680422. Its totient is φ = 148680420.

The previous prime is 148680379. The next prime is 148680439. The reversal of 148680421 is 124086841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147501025 + 1179396 = 12145^2 + 1086^2 .

It is a cyclic number.

It is not a de Polignac number, because 148680421 - 2¹¹ = 148678373 is a prime.

It is equal to p_8374390 and since 148680421 and 8374390 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148680451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74340210 + 74340211.

It is an arithmetic number, because the mean of its divisors is an integer number (74340211).

Almost surely, 2^148680421 is an apocalyptic number.

It is an amenable number.

148680421 is a deficient number, since it is larger than the sum of its proper divisors (1).

148680421 is an equidigital number, since it uses as much as digits as its factorization.

148680421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 148680421 is about 12193.4581231085. The cubic root of 148680421 is about 529.7666244390.

The spelling of 148680421 in words is "one hundred forty-eight million, six hundred eighty thousand, four hundred twenty-one".