6540420234 has 32 divisors (see below), whose sum is σ = 13903021440. Its totient is φ = 2044086272.

The previous prime is 6540420221. The next prime is 6540420253. The reversal of 6540420234 is 4320240456.

It is a super-2 number, since 2×6540420234² = 85554193674633229512, which contains 22 as substring.

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, 95079 + ... + 148730.

It is an arithmetic number, because the mean of its divisors is an integer number (434469420).

Almost surely, 2^6540420234 is an apocalyptic number.

6540420234 is an abundant number, since it is smaller than the sum of its proper divisors (7362601206).

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

6540420234 is a wasteful number, since it uses less digits than its factorization.

6540420234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244094.

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 6540420234 is about 80872.8646333243. The cubic root of 6540420234 is about 1870.1160226182.

The spelling of 6540420234 in words is "six billion, five hundred forty million, four hundred twenty thousand, two hundred thirty-four".