4121545 has 16 divisors (see below), whose sum is σ = 5121792. Its totient is φ = 3182400.

The previous prime is 4121539. The next prime is 4121549. The reversal of 4121545 is 5451214.

It is not a de Polignac number, because 4121545 - 2¹³ = 4113353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4121549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27220 + ... + 27370.

It is an arithmetic number, because the mean of its divisors is an integer number (320112).

Almost surely, 2^4121545 is an apocalyptic number.

It is an amenable number.

4121545 is a deficient number, since it is larger than the sum of its proper divisors (1000247).

4121545 is a wasteful number, since it uses less digits than its factorization.

4121545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312.

The product of its digits is 800, while the sum is 22.

The square root of 4121545 is about 2030.1588607791. The cubic root of 4121545 is about 160.3319281096.

Adding to 4121545 its reverse (5451214), we get a palindrome (9572759).

The spelling of 4121545 in words is "four million, one hundred twenty-one thousand, five hundred forty-five".