148126221 has 6 divisors (see below), whose sum is σ = 213960110. Its totient is φ = 98750808.

The previous prime is 148126193. The next prime is 148126243. The reversal of 148126221 is 122621841.

It can be written as a sum of positive squares in only one way, i.e., 139570596 + 8555625 = 11814^2 + 2925^2 .

It is not a de Polignac number, because 148126221 - 2⁶ = 148126157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148128221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8229226 + ... + 8229243.

Almost surely, 2^148126221 is an apocalyptic number.

It is an amenable number.

148126221 is a deficient number, since it is larger than the sum of its proper divisors (65833889).

148126221 is a wasteful number, since it uses less digits than its factorization.

148126221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16458475 (or 16458472 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 148126221 is about 12170.7116061469. The cubic root of 148126221 is about 529.1075773178.

The spelling of 148126221 in words is "one hundred forty-eight million, one hundred twenty-six thousand, two hundred twenty-one".