148521939 has 16 divisors (see below), whose sum is σ = 202755840. Its totient is φ = 96674400.

The previous prime is 148521937. The next prime is 148521949. The reversal of 148521939 is 939125841.

148521939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 148521939 - 2¹ = 148521937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 148521939.

It is not an unprimeable number, because it can be changed into a prime (148521937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23949 + ... + 29505.

It is an arithmetic number, because the mean of its divisors is an integer number (12672240).

Almost surely, 2^148521939 is an apocalyptic number.

148521939 is a deficient number, since it is larger than the sum of its proper divisors (54233901).

148521939 is a wasteful number, since it uses less digits than its factorization.

148521939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5770.

The product of its digits is 77760, while the sum is 42.

The square root of 148521939 is about 12186.9577417828. The cubic root of 148521939 is about 529.5783272343.

The spelling of 148521939 in words is "one hundred forty-eight million, five hundred twenty-one thousand, nine hundred thirty-nine".