148242877921 has 2 divisors, whose sum is σ = 148242877922. Its totient is φ = 148242877920.

The previous prime is 148242877903. The next prime is 148242877943. The reversal of 148242877921 is 129778242841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139827384225 + 8415493696 = 373935^2 + 91736^2 .

It is a cyclic number.

It is not a de Polignac number, because 148242877921 - 2³³ = 139652943329 is a prime.

It is a super-3 number, since 3×148242877921³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (148242877901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74121438960 + 74121438961.

It is an arithmetic number, because the mean of its divisors is an integer number (74121438961).

Almost surely, 2^148242877921 is an apocalyptic number.

It is an amenable number.

148242877921 is a deficient number, since it is larger than the sum of its proper divisors (1).

148242877921 is an equidigital number, since it uses as much as digits as its factorization.

148242877921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3612672, while the sum is 55.

The spelling of 148242877921 in words is "one hundred forty-eight billion, two hundred forty-two million, eight hundred seventy-seven thousand, nine hundred twenty-one".