6121540 has 24 divisors (see below), whose sum is σ = 12946752. Its totient is φ = 2431200.

The previous prime is 6121537. The next prime is 6121541. The reversal of 6121540 is 451216.

It is not an unprimeable number, because it can be changed into a prime (6121541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2007 + ... + 4033.

It is an arithmetic number, because the mean of its divisors is an integer number (539448).

Almost surely, 2^6121540 is an apocalyptic number.

It is an amenable number.

6121540 is an abundant number, since it is smaller than the sum of its proper divisors (6825212).

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

6121540 is a wasteful number, since it uses less digits than its factorization.

6121540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187 (or 2185 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 6121540 is about 2474.1746098447. The cubic root of 6121540 is about 182.9308267730.

Adding to 6121540 its reverse (451216), we get a palindrome (6572756).

The spelling of 6121540 in words is "six million, one hundred twenty-one thousand, five hundred forty".