148340821 has 8 divisors (see below), whose sum is σ = 150077088. Its totient is φ = 146610000.

The previous prime is 148340813. The next prime is 148340833. The reversal of 148340821 is 128043841.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 148340821 - 2³ = 148340813 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 (148340021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81006 + ... + 82816.

It is an arithmetic number, because the mean of its divisors is an integer number (18759636).

Almost surely, 2^148340821 is an apocalyptic number.

It is an amenable number.

148340821 is a deficient number, since it is larger than the sum of its proper divisors (1736267).

148340821 is a wasteful number, since it uses less digits than its factorization.

148340821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 148340821 is about 12179.5246623175. The cubic root of 148340821 is about 529.3629714346.

The spelling of 148340821 in words is "one hundred forty-eight million, three hundred forty thousand, eight hundred twenty-one".