1271961 has 24 divisors (see below), whose sum is σ = 1956864. Its totient is φ = 794880.

The previous prime is 1271953. The next prime is 1271971. The reversal of 1271961 is 1691721.

It is not a de Polignac number, because 1271961 - 2³ = 1271953 is a prime.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1271971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13065 + ... + 13161.

It is an arithmetic number, because the mean of its divisors is an integer number (81536).

2^1271961 is an apocalyptic number.

It is an amenable number.

1271961 is a deficient number, since it is larger than the sum of its proper divisors (684903).

1271961 is a wasteful number, since it uses less digits than its factorization.

1271961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 178 counting only the distinct ones).

The product of its digits is 756, while the sum is 27.

The square root of 1271961 is about 1127.8124844140. The cubic root of 1271961 is about 108.3489229373.

The spelling of 1271961 in words is "one million, two hundred seventy-one thousand, nine hundred sixty-one".