148021139 has 8 divisors (see below), whose sum is σ = 169285728. Its totient is φ = 126786240.

The previous prime is 148021129. The next prime is 148021141. The reversal of 148021139 is 931120841.

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

It is not a de Polignac number, because 148021139 - 2¹² = 148017043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148021129) 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, 4559 + ... + 17799.

It is an arithmetic number, because the mean of its divisors is an integer number (21160716).

Almost surely, 2^148021139 is an apocalyptic number.

148021139 is a deficient number, since it is larger than the sum of its proper divisors (21264589).

148021139 is a wasteful number, since it uses less digits than its factorization.

148021139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14845.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 148021139 is about 12166.3938371236. The cubic root of 148021139 is about 528.9824299157.

The spelling of 148021139 in words is "one hundred forty-eight million, twenty-one thousand, one hundred thirty-nine".