1054123805 has 16 divisors (see below), whose sum is σ = 1446637440. Its totient is φ = 722336832.

The previous prime is 1054123789. The next prime is 1054123823. The reversal of 1054123805 is 5083214501.

It is not a de Polignac number, because 1054123805 - 2⁴ = 1054123789 is a prime.

It is a super-2 number, since 2×1054123805² = 2222353992535356050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46466 + ... + 65324.

It is an arithmetic number, because the mean of its divisors is an integer number (90414840).

Almost surely, 2^1054123805 is an apocalyptic number.

It is an amenable number.

1054123805 is a deficient number, since it is larger than the sum of its proper divisors (392513635).

1054123805 is a wasteful number, since it uses less digits than its factorization.

1054123805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20468.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 1054123805 is about 32467.2728297281. The cubic root of 1054123805 is about 1017.7252282894.

The spelling of 1054123805 in words is "one billion, fifty-four million, one hundred twenty-three thousand, eight hundred five".