1240423015 has 8 divisors (see below), whose sum is σ = 1603008288. Its totient is φ = 916004640.

The previous prime is 1240422973. The next prime is 1240423043. The reversal of 1240423015 is 5103240421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1240423015 - 2¹⁵ = 1240390247 is a prime.

It is a super-2 number, since 2×1240423015² = 3077298512283380450, which contains 22 as substring.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 9541651 + ... + 9541780.

It is an arithmetic number, because the mean of its divisors is an integer number (200376036).

Almost surely, 2^1240423015 is an apocalyptic number.

1240423015 is a deficient number, since it is larger than the sum of its proper divisors (362585273).

1240423015 is a wasteful number, since it uses less digits than its factorization.

1240423015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19083449.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1240423015 is about 35219.6396205299. The cubic root of 1240423015 is about 1074.4592239533.

Adding to 1240423015 its reverse (5103240421), we get a palindrome (6343663436).

The spelling of 1240423015 in words is "one billion, two hundred forty million, four hundred twenty-three thousand, fifteen".