20040245242 has 8 divisors (see below), whose sum is σ = 30072560256. Its totient is φ = 10016058492.

The previous prime is 20040245237. The next prime is 20040245243. The reversal of 20040245242 is 24254204002.

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

It is a super-2 number, since 2×20040245242² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20040245243) 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, 2025898 + ... + 2035765.

It is an arithmetic number, because the mean of its divisors is an integer number (3759070032).

Almost surely, 2^20040245242 is an apocalyptic number.

20040245242 is a deficient number, since it is larger than the sum of its proper divisors (10032315014).

20040245242 is a wasteful number, since it uses less digits than its factorization.

20040245242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4064132.

The product of its (nonzero) digits is 5120, while the sum is 25.

Adding to 20040245242 its reverse (24254204002), we get a palindrome (44294449244).

The spelling of 20040245242 in words is "twenty billion, forty million, two hundred forty-five thousand, two hundred forty-two".