4155531442 has 8 divisors (see below), whose sum is σ = 6599961756. Its totient is φ = 1955544192.

The previous prime is 4155531437. The next prime is 4155531451. The reversal of 4155531442 is 2441355514.

4155531442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4076694801 + 78836641 = 63849^2 + 8879^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 122221513 = 4155531442 / (4 + 1 + 5 + 5 + 5 + 3 + 1 + 4 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 4155531398 and 4155531407.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61110723 + ... + 61110790.

Almost surely, 2^4155531442 is an apocalyptic number.

4155531442 is a deficient number, since it is larger than the sum of its proper divisors (2444430314).

4155531442 is a wasteful number, since it uses less digits than its factorization.

4155531442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122221532.

The product of its digits is 48000, while the sum is 34.

The square root of 4155531442 is about 64463.4116534333. The cubic root of 4155531442 is about 1607.7142366644.

Adding to 4155531442 its reverse (2441355514), we get a palindrome (6596886956).

The spelling of 4155531442 in words is "four billion, one hundred fifty-five million, five hundred thirty-one thousand, four hundred forty-two".