148872921 has 16 divisors (see below), whose sum is σ = 205786560. Its totient is φ = 95618880.

The previous prime is 148872907. The next prime is 148872929. The reversal of 148872921 is 129278841.

It is not a de Polignac number, because 148872921 - 2¹⁴ = 148856537 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (148872929) 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, 45486 + ... + 48648.

It is an arithmetic number, because the mean of its divisors is an integer number (12861660).

Almost surely, 2^148872921 is an apocalyptic number.

It is an amenable number.

148872921 is a deficient number, since it is larger than the sum of its proper divisors (56913639).

148872921 is a wasteful number, since it uses less digits than its factorization.

148872921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3736.

The product of its digits is 64512, while the sum is 42.

The square root of 148872921 is about 12201.3491467132. The cubic root of 148872921 is about 529.9951595618.

The spelling of 148872921 in words is "one hundred forty-eight million, eight hundred seventy-two thousand, nine hundred twenty-one".