4040142 has 16 divisors (see below), whose sum is σ = 8101632. Its totient is φ = 1343160.

The previous prime is 4040129. The next prime is 4040159. The reversal of 4040142 is 2410404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2667 + ... + 3897.

It is an arithmetic number, because the mean of its divisors is an integer number (506352).

Almost surely, 2^4040142 is an apocalyptic number.

4040142 is an abundant number, since it is smaller than the sum of its proper divisors (4061490).

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

4040142 is a wasteful number, since it uses less digits than its factorization.

4040142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 4040142 is about 2010.0104477340. The cubic root of 4040142 is about 159.2693508191.

Adding to 4040142 its reverse (2410404), we get a palindrome (6450546).

The spelling of 4040142 in words is "four million, forty thousand, one hundred forty-two".