147121493 has 4 divisors (see below), whose sum is σ = 147148320. Its totient is φ = 147094668.

The previous prime is 147121483. The next prime is 147121517. The reversal of 147121493 is 394121741.

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.

It is a cyclic number.

It is not a de Polignac number, because 147121493 - 2⁴ = 147121477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147121483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1883 + ... + 17256.

It is an arithmetic number, because the mean of its divisors is an integer number (36787080).

Almost surely, 2^147121493 is an apocalyptic number.

It is an amenable number.

147121493 is a deficient number, since it is larger than the sum of its proper divisors (26827).

147121493 is an equidigital number, since it uses as much as digits as its factorization.

147121493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26826.

The product of its digits is 6048, while the sum is 32.

The square root of 147121493 is about 12129.3649050558. The cubic root of 147121493 is about 527.9085645252.

The spelling of 147121493 in words is "one hundred forty-seven million, one hundred twenty-one thousand, four hundred ninety-three".