23240042040 has 64 divisors (see below), whose sum is σ = 72124279200. Its totient is φ = 5983642112.

The previous prime is 23240042009. The next prime is 23240042047. The reversal of 23240042040 is 4024004232.

It is a junction number, because it is equal to n+sod(n) for n = 23240041998 and 23240042016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23240042047) 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, 3335607 + ... + 3342566.

Almost surely, 2^23240042040 is an apocalyptic number.

23240042040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23240042040 is an abundant number, since it is smaller than the sum of its proper divisors (48884237160).

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

23240042040 is a wasteful number, since it uses less digits than its factorization.

23240042040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6678216 (or 6678212 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 23240042040 its reverse (4024004232), we get a palindrome (27264046272).

The spelling of 23240042040 in words is "twenty-three billion, two hundred forty million, forty-two thousand, forty".