1253971 has 6 divisors (see below), whose sum is σ = 1332380. Its totient is φ = 1179936.

The previous prime is 1253969. The next prime is 1253999. The reversal of 1253971 is 1793521.

It is not a de Polignac number, because 1253971 - 2¹ = 1253969 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1881 + ... + 2458.

2^1253971 is an apocalyptic number.

1253971 is a deficient number, since it is larger than the sum of its proper divisors (78409).

1253971 is an equidigital number, since it uses as much as digits as its factorization.

1253971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4373 (or 4356 counting only the distinct ones).

The product of its digits is 1890, while the sum is 28.

The square root of 1253971 is about 1119.8084657655. The cubic root of 1253971 is about 107.8356840570.

It can be divided in two parts, 125 and 3971, that added together give a 12-th power (4096 = 2¹²).

The spelling of 1253971 in words is "one million, two hundred fifty-three thousand, nine hundred seventy-one".