1240041213 has 12 divisors (see below), whose sum is σ = 1885443040. Its totient is φ = 783183816.

The previous prime is 1240041211. The next prime is 1240041241. The reversal of 1240041213 is 3121400421.

1240041213 is a `hidden beast` number, since 1 + 240 + 0 + 412 + 13 = 666.

It is not a de Polignac number, because 1240041213 - 2¹ = 1240041211 is a prime.

It is a super-2 number, since 2×1240041213² = 3075404419877022738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240041211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3625681 + ... + 3626022.

Almost surely, 2^1240041213 is an apocalyptic number.

It is an amenable number.

1240041213 is a deficient number, since it is larger than the sum of its proper divisors (645401827).

1240041213 is a wasteful number, since it uses less digits than its factorization.

1240041213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7251728 (or 7251725 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1240041213 is about 35214.2189037326. The cubic root of 1240041213 is about 1074.3489731834.

Adding to 1240041213 its reverse (3121400421), we get a palindrome (4361441634).

The spelling of 1240041213 in words is "one billion, two hundred forty million, forty-one thousand, two hundred thirteen".