1242040415 has 16 divisors (see below), whose sum is σ = 1858222080. Its totient is φ = 774258720.

The previous prime is 1242040403. The next prime is 1242040421. The reversal of 1242040415 is 5140402421.

It is not a de Polignac number, because 1242040415 - 2⁴ = 1242040399 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1612655 + ... + 1613424.

It is an arithmetic number, because the mean of its divisors is an integer number (116138880).

Almost surely, 2^1242040415 is an apocalyptic number.

1242040415 is a deficient number, since it is larger than the sum of its proper divisors (616181665).

1242040415 is a wasteful number, since it uses less digits than its factorization.

1242040415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3226102.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1242040415 is about 35242.5937609592. The cubic root of 1242040415 is about 1074.9260205084.

Adding to 1242040415 its reverse (5140402421), we get a palindrome (6382442836).

The spelling of 1242040415 in words is "one billion, two hundred forty-two million, forty thousand, four hundred fifteen".