240400240040 has 64 divisors (see below), whose sum is σ = 545263056000. Its totient is φ = 95386606848.

The previous prime is 240400239991. The next prime is 240400240057. The reversal of 240400240040 is 40042004042.

It is a super-2 number, since 2×240400240040² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 240400239994 and 240400240021.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3729767 + ... + 3793673.

It is an arithmetic number, because the mean of its divisors is an integer number (8519735250).

Almost surely, 2^240400240040 is an apocalyptic number.

240400240040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240400240040 is an abundant number, since it is smaller than the sum of its proper divisors (304862815960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

240400240040 is a wasteful number, since it uses less digits than its factorization.

240400240040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64674 (or 64670 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 240400240040 its reverse (40042004042), we get a palindrome (280442244082).

The spelling of 240400240040 in words is "two hundred forty billion, four hundred million, two hundred forty thousand, forty".