1071166421 has 32 divisors (see below), whose sum is σ = 1211874048. Its totient is φ = 940423680.

The previous prime is 1071166409. The next prime is 1071166423. The reversal of 1071166421 is 1246611701.

It is a cyclic number.

It is not a de Polignac number, because 1071166421 - 2²² = 1066972117 is a prime.

It is a super-2 number, since 2×1071166421² = 2294795002955898482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071166423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5437295 + ... + 5437491.

It is an arithmetic number, because the mean of its divisors is an integer number (37871064).

Almost surely, 2^1071166421 is an apocalyptic number.

It is an amenable number.

1071166421 is a deficient number, since it is larger than the sum of its proper divisors (140707627).

1071166421 is a wasteful number, since it uses less digits than its factorization.

1071166421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1071166421 is about 32728.6788764838. The cubic root of 1071166421 is about 1023.1806460033.

The spelling of 1071166421 in words is "one billion, seventy-one million, one hundred sixty-six thousand, four hundred twenty-one".