1242405016 has 16 divisors (see below), whose sum is σ = 2466539640. Its totient is φ = 584661120.

The previous prime is 1242405013. The next prime is 1242405019. The reversal of 1242405016 is 6105042421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1242405013) and next prime (1242405019).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242405013) 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, 4567530 + ... + 4567801.

Almost surely, 2^1242405016 is an apocalyptic number.

It is an amenable number.

1242405016 is a deficient number, since it is larger than the sum of its proper divisors (1224134624).

1242405016 is a wasteful number, since it uses less digits than its factorization.

1242405016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9135354 (or 9135350 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1242405016 is about 35247.7661136135. The cubic root of 1242405016 is about 1075.0311917396.

Adding to 1242405016 its reverse (6105042421), we get a palindrome (7347447437).

The spelling of 1242405016 in words is "one billion, two hundred forty-two million, four hundred five thousand, sixteen".