1240120411 has 4 divisors (see below), whose sum is σ = 1240191000. Its totient is φ = 1240049824.

The previous prime is 1240120391. The next prime is 1240120429. The reversal of 1240120411 is 1140210421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1240120411 - 2⁷ = 1240120283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240120451) 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, 14115 + ... + 51763.

It is an arithmetic number, because the mean of its divisors is an integer number (310047750).

Almost surely, 2^1240120411 is an apocalyptic number.

1240120411 is a deficient number, since it is larger than the sum of its proper divisors (70589).

1240120411 is an equidigital number, since it uses as much as digits as its factorization.

1240120411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70588.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1240120411 is about 35215.3434031247. The cubic root of 1240120411 is about 1074.3718445949.

Adding to 1240120411 its reverse (1140210421), we get a palindrome (2380330832).

The spelling of 1240120411 in words is "one billion, two hundred forty million, one hundred twenty thousand, four hundred eleven".