148242621 has 4 divisors (see below), whose sum is σ = 197656832. Its totient is φ = 98828412.

The previous prime is 148242607. The next prime is 148242637. The reversal of 148242621 is 126242841.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 126242841 = 3 ⋅42080947.

It is not a de Polignac number, because 148242621 - 2⁹ = 148242109 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 (148242641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24707101 + ... + 24707106.

It is an arithmetic number, because the mean of its divisors is an integer number (49414208).

Almost surely, 2^148242621 is an apocalyptic number.

It is an amenable number.

148242621 is a deficient number, since it is larger than the sum of its proper divisors (49414211).

148242621 is an equidigital number, since it uses as much as digits as its factorization.

148242621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49414210.

The product of its digits is 6144, while the sum is 30.

The square root of 148242621 is about 12175.4926389038. The cubic root of 148242621 is about 529.2461348181.

The spelling of 148242621 in words is "one hundred forty-eight million, two hundred forty-two thousand, six hundred twenty-one".