1240021041 has 16 divisors (see below), whose sum is σ = 1890278400. Its totient is φ = 708312528.

The previous prime is 1240021037. The next prime is 1240021043. The reversal of 1240021041 is 1401200421.

It is not a de Polignac number, because 1240021041 - 2² = 1240021037 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1240021041.

It is not an unprimeable number, because it can be changed into a prime (1240021043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53620 + ... + 73178.

It is an arithmetic number, because the mean of its divisors is an integer number (118142400).

Almost surely, 2^1240021041 is an apocalyptic number.

It is an amenable number.

1240021041 is a deficient number, since it is larger than the sum of its proper divisors (650257359).

1240021041 is a wasteful number, since it uses less digits than its factorization.

1240021041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22588.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1240021041 is about 35213.9324841745. The cubic root of 1240021041 is about 1074.3431476015.

Adding to 1240021041 its reverse (1401200421), we get a palindrome (2641221462).

The spelling of 1240021041 in words is "one billion, two hundred forty million, twenty-one thousand, forty-one".