1240402011015 has 32 divisors (see below), whose sum is σ = 1989142272000. Its totient is φ = 660048556160.

The previous prime is 1240402011001. The next prime is 1240402011059. The reversal of 1240402011015 is 5101102040421.

It is not a de Polignac number, because 1240402011015 - 2⁴ = 1240402010999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1240402010982 and 1240402011000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52661461 + ... + 52685009.

It is an arithmetic number, because the mean of its divisors is an integer number (62160696000).

Almost surely, 2^{1240402011015} is an apocalyptic number.

1240402011015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1240402011015 is a deficient number, since it is larger than the sum of its proper divisors (748740260985).

1240402011015 is a wasteful number, since it uses less digits than its factorization.

1240402011015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31367.

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 1240402011015 its reverse (5101102040421), we get a palindrome (6341504051436).

The spelling of 1240402011015 in words is "one trillion, two hundred forty billion, four hundred two million, eleven thousand, fifteen".