1240913 has 4 divisors (see below), whose sum is σ = 1243200. Its totient is φ = 1238628.

The previous prime is 1240861. The next prime is 1240931. The reversal of 1240913 is 3190421.

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: 3190421 = 13 ⋅245417.

It is a cyclic number.

It is not a de Polignac number, because 1240913 - 2¹⁴ = 1224529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240973) 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, 188 + ... + 1586.

It is an arithmetic number, because the mean of its divisors is an integer number (310800).

2^1240913 is an apocalyptic number.

It is an amenable number.

1240913 is a deficient number, since it is larger than the sum of its proper divisors (2287).

1240913 is an equidigital number, since it uses as much as digits as its factorization.

1240913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2286.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1240913 is about 1113.9627462353. The cubic root of 1240913 is about 107.4600680965.

It can be divided in two parts, 124091 and 3, that multiplied together give a palindrome (372273).

The spelling of 1240913 in words is "one million, two hundred forty thousand, nine hundred thirteen".