4155542243 has 4 divisors (see below), whose sum is σ = 4175236968. Its totient is φ = 4135847520.

The previous prime is 4155542233. The next prime is 4155542263. The reversal of 4155542243 is 3422455514.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4155542243 - 2⁶ = 4155542179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4155542233) 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, 9847046 + ... + 9847467.

It is an arithmetic number, because the mean of its divisors is an integer number (1043809242).

Almost surely, 2^4155542243 is an apocalyptic number.

4155542243 is a deficient number, since it is larger than the sum of its proper divisors (19694725).

4155542243 is a wasteful number, since it uses less digits than its factorization.

4155542243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19694724.

The product of its digits is 96000, while the sum is 35.

The square root of 4155542243 is about 64463.4954295840. The cubic root of 4155542243 is about 1607.7156295795.

Adding to 4155542243 its reverse (3422455514), we get a palindrome (7577997757).

The spelling of 4155542243 in words is "four billion, one hundred fifty-five million, five hundred forty-two thousand, two hundred forty-three".