971672121 has 48 divisors (see below), whose sum is σ = 1654024320. Its totient is φ = 538202880.

The previous prime is 971672101. The next prime is 971672131. The reversal of 971672121 is 121276179.

It is a happy number.

It is not a de Polignac number, because 971672121 - 2⁷ = 971671993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (971672101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 269551 + ... + 273131.

It is an arithmetic number, because the mean of its divisors is an integer number (34458840).

Almost surely, 2^971672121 is an apocalyptic number.

It is an amenable number.

971672121 is a deficient number, since it is larger than the sum of its proper divisors (682352199).

971672121 is a wasteful number, since it uses less digits than its factorization.

971672121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3726 (or 3723 counting only the distinct ones).

The product of its digits is 10584, while the sum is 36.

The square root of 971672121 is about 31171.6557308078. The cubic root of 971672121 is about 990.4667801869.

The spelling of 971672121 in words is "nine hundred seventy-one million, six hundred seventy-two thousand, one hundred twenty-one".