4002540234 has 32 divisors (see below), whose sum is σ = 9980361216. Its totient is φ = 1039620720.

The previous prime is 4002540181. The next prime is 4002540251. The reversal of 4002540234 is 4320452004.

It is a Curzon number.

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, 4331292 + ... + 4332215.

It is an arithmetic number, because the mean of its divisors is an integer number (311886288).

Almost surely, 2^4002540234 is an apocalyptic number.

4002540234 is an abundant number, since it is smaller than the sum of its proper divisors (5977820982).

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

4002540234 is a wasteful number, since it uses less digits than its factorization.

4002540234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8663530.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 4002540234 is about 63265.6323290932. The cubic root of 4002540234 is about 1587.7370117039.

Adding to 4002540234 its reverse (4320452004), we get a palindrome (8322992238).

The spelling of 4002540234 in words is "four billion, two million, five hundred forty thousand, two hundred thirty-four".