2042400247 has 16 divisors (see below), whose sum is σ = 2184548832. Its totient is φ = 1902781440.

The previous prime is 2042400233. The next prime is 2042400257. The reversal of 2042400247 is 7420042402.

It is a happy number.

It is not a de Polignac number, because 2042400247 - 2¹¹ = 2042398199 is a prime.

It is a super-2 number, since 2×2042400247² = 8342797537891322018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2042400257) 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, 979468 + ... + 981550.

It is an arithmetic number, because the mean of its divisors is an integer number (136534302).

Almost surely, 2^2042400247 is an apocalyptic number.

2042400247 is a deficient number, since it is larger than the sum of its proper divisors (142148585).

2042400247 is a wasteful number, since it uses less digits than its factorization.

2042400247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2658.

The product of its (nonzero) digits is 3584, while the sum is 25.

The square root of 2042400247 is about 45192.9225321842. The cubic root of 2042400247 is about 1268.7623561869.

Adding to 2042400247 its reverse (7420042402), we get a palindrome (9462442649).

The spelling of 2042400247 in words is "two billion, forty-two million, four hundred thousand, two hundred forty-seven".