5405123144 has 8 divisors (see below), whose sum is σ = 10134605910. Its totient is φ = 2702561568.

The previous prime is 5405123131. The next prime is 5405123147. The reversal of 5405123144 is 4413215045.

It can be written as a sum of positive squares in only one way, i.e., 4311498244 + 1093624900 = 65662^2 + 33070^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (5405123147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337820189 + ... + 337820204.

Almost surely, 2^5405123144 is an apocalyptic number.

It is an amenable number.

5405123144 is a deficient number, since it is larger than the sum of its proper divisors (4729482766).

5405123144 is a wasteful number, since it uses less digits than its factorization.

5405123144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675640399 (or 675640395 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 5405123144 is about 73519.5425992300. The cubic root of 5405123144 is about 1754.9652884480.

Adding to 5405123144 its reverse (4413215045), we get a palindrome (9818338189).

The spelling of 5405123144 in words is "five billion, four hundred five million, one hundred twenty-three thousand, one hundred forty-four".