148131121 has 4 divisors (see below), whose sum is σ = 149515632. Its totient is φ = 146746612.

The previous prime is 148131107. The next prime is 148131143. The reversal of 148131121 is 121131841.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121131841 = 2591 ⋅46751.

It is a cyclic number.

It is not a de Polignac number, because 148131121 - 2¹⁷ = 148000049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 148131092 and 148131101.

It is not an unprimeable number, because it can be changed into a prime (148131521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 692095 + ... + 692308.

It is an arithmetic number, because the mean of its divisors is an integer number (37378908).

Almost surely, 2^148131121 is an apocalyptic number.

It is an amenable number.

148131121 is a deficient number, since it is larger than the sum of its proper divisors (1384511).

148131121 is a wasteful number, since it uses less digits than its factorization.

148131121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384510.

The product of its digits is 192, while the sum is 22.

The square root of 148131121 is about 12170.9129074199. The cubic root of 148131121 is about 529.1134115281.

Adding to 148131121 its reverse (121131841), we get a palindrome (269262962).

The spelling of 148131121 in words is "one hundred forty-eight million, one hundred thirty-one thousand, one hundred twenty-one".