1240461213 has 4 divisors (see below), whose sum is σ = 1653948288. Its totient is φ = 826974140.

The previous prime is 1240461091. The next prime is 1240461217. The reversal of 1240461213 is 3121640421.

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: 3121640421 = 3 ⋅1040546807.

It is a cyclic number.

It is not a de Polignac number, because 1240461213 - 2¹⁰ = 1240460189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240461217) 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, 206743533 + ... + 206743538.

It is an arithmetic number, because the mean of its divisors is an integer number (413487072).

Almost surely, 2^1240461213 is an apocalyptic number.

It is an amenable number.

1240461213 is a deficient number, since it is larger than the sum of its proper divisors (413487075).

1240461213 is an equidigital number, since it uses as much as digits as its factorization.

1240461213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413487074.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1240461213 is about 35220.1818990192. The cubic root of 1240461213 is about 1074.4702529254.

The spelling of 1240461213 in words is "one billion, two hundred forty million, four hundred sixty-one thousand, two hundred thirteen".