148212381 has 8 divisors (see below), whose sum is σ = 197787744. Its totient is φ = 98722640.

The previous prime is 148212373. The next prime is 148212403. The reversal of 148212381 is 183212841.

148212381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 148212381 - 2³ = 148212373 is a prime.

It is a super-2 number, since 2×148212381² = 43933819763378322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148292381) 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, 17250 + ... + 24371.

It is an arithmetic number, because the mean of its divisors is an integer number (24723468).

Almost surely, 2^148212381 is an apocalyptic number.

It is an amenable number.

148212381 is a deficient number, since it is larger than the sum of its proper divisors (49575363).

148212381 is a wasteful number, since it uses less digits than its factorization.

148212381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42811.

The product of its digits is 3072, while the sum is 30.

The square root of 148212381 is about 12174.2507366983. The cubic root of 148212381 is about 529.2101454124.

The spelling of 148212381 in words is "one hundred forty-eight million, two hundred twelve thousand, three hundred eighty-one".