4012042040 has 64 divisors (see below), whose sum is σ = 9236993760. Its totient is φ = 1567918080.

The previous prime is 4012042039. The next prime is 4012042043. The reversal of 4012042040 is 402402104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4012042043) 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, 306020 + ... + 318860.

Almost surely, 2^4012042040 is an apocalyptic number.

4012042040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4012042040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4618496880).

4012042040 is an abundant number, since it is smaller than the sum of its proper divisors (5224951720).

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

4012042040 is a wasteful number, since it uses less digits than its factorization.

4012042040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13032 (or 13028 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 4012042040 is about 63340.6823455510. The cubic root of 4012042040 is about 1588.9924183405.

Adding to 4012042040 its reverse (402402104), we get a palindrome (4414444144).

The spelling of 4012042040 in words is "four billion, twelve million, forty-two thousand, forty".