34121540 has 12 divisors (see below), whose sum is σ = 71655276. Its totient is φ = 13648608.

The previous prime is 34121539. The next prime is 34121543. The reversal of 34121540 is 4512143.

It can be written as a sum of positive squares in 2 ways, for example, as 26853124 + 7268416 = 5182^2 + 2696^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1706077 = 34121540 / (3 + 4 + 1 + 2 + 1 + 5 + 4 + 0).

It is not an unprimeable number, because it can be changed into a prime (34121543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 853019 + ... + 853058.

It is an arithmetic number, because the mean of its divisors is an integer number (5971273).

Almost surely, 2^34121540 is an apocalyptic number.

It is an amenable number.

34121540 is an abundant number, since it is smaller than the sum of its proper divisors (37533736).

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

34121540 is a wasteful number, since it uses less digits than its factorization.

34121540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706086 (or 1706084 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 34121540 is about 5841.3645666060. The cubic root of 34121540 is about 324.3467430461.

Adding to 34121540 its reverse (4512143), we get a palindrome (38633683).

The spelling of 34121540 in words is "thirty-four million, one hundred twenty-one thousand, five hundred forty".