1071434421 has 12 divisors (see below), whose sum is σ = 1565017740. Its totient is φ = 706263360.

The previous prime is 1071434407. The next prime is 1071434447. The reversal of 1071434421 is 1244341701.

It can be written as a sum of positive squares in 2 ways, for example, as 364619025 + 706815396 = 19095^2 + 26586^2 .

It is not a de Polignac number, because 1071434421 - 2⁷ = 1071434293 is a prime.

It is a super-2 number, since 2×1071434421² = 2295943437007210482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071434521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 668010 + ... + 669611.

It is an arithmetic number, because the mean of its divisors is an integer number (130418145).

Almost surely, 2^1071434421 is an apocalyptic number.

It is an amenable number.

1071434421 is a deficient number, since it is larger than the sum of its proper divisors (493583319).

1071434421 is a wasteful number, since it uses less digits than its factorization.

1071434421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337716 (or 1337713 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 1071434421 is about 32732.7728889564. The cubic root of 1071434421 is about 1023.2659702947.

The spelling of 1071434421 in words is "one billion, seventy-one million, four hundred thirty-four thousand, four hundred twenty-one".