971129426 has 4 divisors (see below), whose sum is σ = 1456694142. Its totient is φ = 485564712.

The previous prime is 971129413. The next prime is 971129429. The reversal of 971129426 is 624921179.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 789553801 + 181575625 = 28099^2 + 13475^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (971129429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 242782355 + ... + 242782358.

Almost surely, 2^971129426 is an apocalyptic number.

971129426 is a deficient number, since it is larger than the sum of its proper divisors (485564716).

971129426 is a wasteful number, since it uses less digits than its factorization.

971129426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485564715.

The product of its digits is 54432, while the sum is 41.

The square root of 971129426 is about 31162.9495715666. The cubic root of 971129426 is about 990.2823484703.

The spelling of 971129426 in words is "nine hundred seventy-one million, one hundred twenty-nine thousand, four hundred twenty-six".